यदि (y=3x-2) और (x+y=18), तो (y) का मान क्या होगा?
If (y=3x-2) and (x+y=18), what will be the value of (y)?
#linear equations
#substitution
#value of y
#easy
#class 10
A (y=10)
B (y=11)
C (y=13)
D (y=15)
Explanation opens after your attempt
Step 1
Concept
Substituting (y=3x-2) gives (4x-2=18), so (x=5) and (y=13). Find (x) first, then use the expression for (y).
Step 2
Why this answer is correct
The correct answer is C. (y=13). Substituting (y=3x-2) gives (4x-2=18), so (x=5) and (y=13). Find (x) first, then use the expression for (y).
Step 3
Exam Tip
(y=3x-2) रखने पर (4x-2=18), इसलिए (x=5) और (y=13)। पहले (x) निकालें फिर (y) के रूप में रखें।
Login to save your score, XP, coins and progress. Login
यदि (x-2y=3) और (x+y=12), तो (y) का मान क्या है?
If (x-2y=3) and (x+y=12), what is the value of (y)?
#linear equations
#substitution
#value of y
#easy
#class 10
A (y=2)
B (y=3)
C (y=4)
D (y=5)
Explanation opens after your attempt
Step 1
Concept
Substituting (x=12-y) gives (12-y-2y=3), so (y=3). Simplify negative signs carefully in substitution.
Step 2
Why this answer is correct
The correct answer is B. (y=3). Substituting (x=12-y) gives (12-y-2y=3), so (y=3). Simplify negative signs carefully in substitution.
Step 3
Exam Tip
(x=12-y) रखने पर (12-y-2y=3), इसलिए (y=3)। प्रतिस्थापन में ऋण चिन्हों को ध्यान से सरल करें।
Login to save your score, XP, coins and progress. Login
यदि (x=2y-4) और (x+y=14), तो सही हल कौन-सा है?
If (x=2y-4) and (x+y=14), which is the correct solution?
#linear equations
#substitution
#solution pair
#easy
#class 10
A (x=8,\ y=6)
B (x=6,\ y=8)
C (x=10,\ y=4)
D (x=4,\ y=10)
Explanation opens after your attempt
Correct Answer
A. (x=8,\ y=6)
Step 1
Concept
Substituting (x=2y-4) gives (3y-4=14), so (y=6) and (x=8). Use the given expression for (x) directly.
Step 2
Why this answer is correct
The correct answer is A. (x=8,\ y=6). Substituting (x=2y-4) gives (3y-4=14), so (y=6) and (x=8). Use the given expression for (x) directly.
Step 3
Exam Tip
(x=2y-4) रखने पर (3y-4=14), इसलिए (y=6) और (x=8)। बने हुए (x) के रूप को सीधे रखें।
Login to save your score, XP, coins and progress. Login
यदि (x+5y=32) और (x=7), तो (y) का मान क्या होगा?
If (x+5y=32) and (x=7), what will be the value of (y)?
#linear equations
#substitution
#value of y
#easy
#class 10
A (y=4)
B (y=5)
C (y=6)
D (y=7)
Explanation opens after your attempt
Step 1
Concept
Putting (x=7) gives (7+5y=32), so (y=5). After substituting the given value, divide carefully.
Step 2
Why this answer is correct
The correct answer is B. (y=5). Putting (x=7) gives (7+5y=32), so (y=5). After substituting the given value, divide carefully.
Step 3
Exam Tip
(x=7) रखने पर (7+5y=32), इसलिए (y=5)। दिए हुए मान को रखने के बाद भाग दें।
Login to save your score, XP, coins and progress. Login
यदि (y=x-3) और (2x+y=15), तो (x) का मान क्या है?
If (y=x-3) and (2x+y=15), what is the value of (x)?
#linear equations
#substitution
#value of x
#easy
#class 10
A (x=4)
B (x=5)
C (x=6)
D (x=7)
Explanation opens after your attempt
Step 1
Concept
Substituting (y=x-3) gives (3x-3=15), so (x=6). After substitution, solve the equation in one variable.
Step 2
Why this answer is correct
The correct answer is C. (x=6). Substituting (y=x-3) gives (3x-3=15), so (x=6). After substitution, solve the equation in one variable.
Step 3
Exam Tip
(y=x-3) रखने पर (3x-3=15), इसलिए (x=6)। प्रतिस्थापन के बाद समीकरण को एक चर में हल करें।
Login to save your score, XP, coins and progress. Login
दो संख्याओं (x) और (y) का योग (18) है और (y=7), तो (x) का मान क्या है?
The sum of two numbers (x) and (y) is (18), and (y=7). What is the value of (x)?
#linear equations
#word problem
#substitution
#easy
#class 10
A (x=8)
B (x=9)
C (x=10)
D (x=11)
Explanation opens after your attempt
Step 1
Concept
Putting (y=7) in (x+y=18) gives (x=11). In word problems, form the equation first.
Step 2
Why this answer is correct
The correct answer is D. (x=11). Putting (y=7) in (x+y=18) gives (x=11). In word problems, form the equation first.
Step 3
Exam Tip
समीकरण (x+y=18) में (y=7) रखने पर (x=11)। शब्द प्रश्न में पहले समीकरण बनाएं।
Login to save your score, XP, coins and progress. Login
यदि (x=9-y) और (3x+y=19), तो (y) का मान क्या होगा?
If (x=9-y) and (3x+y=19), what will be the value of (y)?
#linear equations
#substitution
#value of y
#easy
#class 10
A (y=4)
B (y=5)
C (y=6)
D (y=7)
Explanation opens after your attempt
Step 1
Concept
Substituting (x=9-y) gives (27-3y+y=19), so (y=4). Be careful while simplifying negative terms.
Step 2
Why this answer is correct
The correct answer is A. (y=4). Substituting (x=9-y) gives (27-3y+y=19), so (y=4). Be careful while simplifying negative terms.
Step 3
Exam Tip
(x=9-y) रखने पर (27-3y+y=19), इसलिए (y=4)। ऋण पदों को सरल करते समय सावधानी रखें।
Login to save your score, XP, coins and progress. Login
समीकरणों (2x+3y=21) और (x+y=8) में (y) का मान क्या होगा?
In (2x+3y=21) and (x+y=8), what will be the value of (y)?
#linear equations
#substitution
#value of y
#easy
#class 10
A (y=3)
B (y=4)
C (y=5)
D (y=6)
Explanation opens after your attempt
Step 1
Concept
Using (x=8-y) gives (16-2y+3y=21), so (y=5). It is useful to isolate (x) from the smaller equation.
Step 2
Why this answer is correct
The correct answer is C. (y=5). Using (x=8-y) gives (16-2y+3y=21), so (y=5). It is useful to isolate (x) from the smaller equation.
Step 3
Exam Tip
(x=8-y) रखने पर (16-2y+3y=21), इसलिए (y=5)। छोटे समीकरण से (x) अलग करना उपयोगी है।
Login to save your score, XP, coins and progress. Login
यदि (x+2y=20) और (x-y=2), तो (x) और (y) के मान क्या हैं?
If (x+2y=20) and (x-y=2), what are the values of (x) and (y)?
#linear equations
#substitution
#solution pair
#easy
#class 10
A (x=8,\ y=6)
B (x=6,\ y=8)
C (x=10,\ y=5)
D (x=7,\ y=7)
Explanation opens after your attempt
Correct Answer
A. (x=8,\ y=6)
Step 1
Concept
From the second equation (x=y+2); substituting gives (3y+2=20), so (y=6) and (x=8). Isolate a variable from the simpler equation.
Step 2
Why this answer is correct
The correct answer is A. (x=8,\ y=6). From the second equation (x=y+2); substituting gives (3y+2=20), so (y=6) and (x=8). Isolate a variable from the simpler equation.
Step 3
Exam Tip
दूसरे समीकरण से (x=y+2); रखने पर (3y+2=20), इसलिए (y=6) और (x=8)। सरल समीकरण से चर अलग करें।
Login to save your score, XP, coins and progress. Login
यदि (y=2x+3) और (x+y=15), तो सही हल कौन-सा है?
If (y=2x+3) and (x+y=15), which is the correct solution?
#linear equations
#substitution
#solution
#easy
#class 10
A (x=3,\ y=12)
B (x=5,\ y=10)
C (x=6,\ y=9)
D (x=4,\ y=11)
Explanation opens after your attempt
Correct Answer
D. (x=4,\ y=11)
Step 1
Concept
Substituting (y=2x+3) gives (3x+3=15), so (x=4) and (y=11). Combine like terms after substitution.
Step 2
Why this answer is correct
The correct answer is D. (x=4,\ y=11). Substituting (y=2x+3) gives (3x+3=15), so (x=4) and (y=11). Combine like terms after substitution.
Step 3
Exam Tip
(y=2x+3) रखने पर (3x+3=15), इसलिए (x=4) और (y=11)। प्रतिस्थापन के बाद समान पद जोड़ें।
Login to save your score, XP, coins and progress. Login
यदि (x=3y) और (x+y=16), तो (x) और (y) के मान क्या हैं?
If (x=3y) and (x+y=16), what are the values of (x) and (y)?
#linear equations
#substitution
#multiple relation
#easy
#class 10
A (x=10,\ y=6)
B (x=8,\ y=8)
C (x=12,\ y=4)
D (x=9,\ y=7)
Explanation opens after your attempt
Correct Answer
C. (x=12,\ y=4)
Step 1
Concept
Substituting (x=3y) gives (4y=16), so (y=4) and (x=12). Substitution is fast when one variable is a multiple of another.
Step 2
Why this answer is correct
The correct answer is C. (x=12,\ y=4). Substituting (x=3y) gives (4y=16), so (y=4) and (x=12). Substitution is fast when one variable is a multiple of another.
Step 3
Exam Tip
(x=3y) रखने पर (4y=16), इसलिए (y=4) और (x=12)। गुणज वाले रूप में प्रतिस्थापन तेज होता है।
Login to save your score, XP, coins and progress. Login
यदि (y=x+5) और (x+y=17), तो सही हल कौन-सा है?
If (y=x+5) and (x+y=17), which is the correct solution?
#linear equations
#substitution
#solution pair
#easy
#class 10
A (x=5,\ y=12)
B (x=6,\ y=11)
C (x=7,\ y=10)
D (x=8,\ y=9)
Explanation opens after your attempt
Correct Answer
B. (x=6,\ y=11)
Step 1
Concept
Substituting (y=x+5) gives (2x+5=17), so (x=6) and (y=11). Using the isolated variable is easier.
Step 2
Why this answer is correct
The correct answer is B. (x=6,\ y=11). Substituting (y=x+5) gives (2x+5=17), so (x=6) and (y=11). Using the isolated variable is easier.
Step 3
Exam Tip
(y=x+5) रखने पर (2x+5=17), इसलिए (x=6) और (y=11)। अलग किए हुए चर का उपयोग करना आसान रहता है।
Login to save your score, XP, coins and progress. Login
यदि (x+y=14) और (x=6), तो (y) का मान क्या है?
If (x+y=14) and (x=6), what is the value of (y)?
#linear equations
#substitution
#value of y
#easy
#class 10
A (y=6)
B (y=7)
C (y=8)
D (y=9)
Explanation opens after your attempt
Step 1
Concept
Putting (x=6) gives (6+y=14), so (y=8). In substitution, place the given value directly.
Step 2
Why this answer is correct
The correct answer is C. (y=8). Putting (x=6) gives (6+y=14), so (y=8). In substitution, place the given value directly.
Step 3
Exam Tip
(x=6) रखने पर (6+y=14), इसलिए (y=8)। प्रतिस्थापन में दिया हुआ मान सीधे रखें।
Login to save your score, XP, coins and progress. Login
समीकरणों (2x+y=11) और (x-y=1) का हल क्या है?
What is the solution of the equations (2x+y=11) and (x-y=1)?
#linear equations
#substitution
#elimination
#easy
#class 10
A (x=4,\ y=3)
B (x=3,\ y=4)
C (x=5,\ y=1)
D (x=2,\ y=5)
Explanation opens after your attempt
Correct Answer
A. (x=4,\ y=3)
Step 1
Concept
Adding both equations gives (3x=12), so (x=4) and (y=3). In exams, eliminate the variable with opposite signs first.
Step 2
Why this answer is correct
The correct answer is A. (x=4,\ y=3). Adding both equations gives (3x=12), so (x=4) and (y=3). In exams, eliminate the variable with opposite signs first.
Step 3
Exam Tip
दोनों समीकरण जोड़ने पर (3x=12), इसलिए (x=4) और (y=3)। परीक्षा में विपरीत चिन्ह वाले चर को पहले हटाएं।
Login to save your score, XP, coins and progress. Login
प्रतिस्थापन विधि से (x+y=17) और (y=x+3) का हल ज्ञात करें।
Find the solution of (x+y=17) and (y=x+3) by substitution.
#linear equations
#substitution
#one variable equation
#easy
#class 10
A ( (6,11) )
B ( (8,9) )
C ( (7,10) )
D ( (5,12) )
Explanation opens after your attempt
Correct Answer
C. ( (7,10) )
Step 1
Concept
Putting (y=x+3) gives (2x+3=17), so (x=7) and (y=10). Solve the one-variable equation formed after substitution.
Step 2
Why this answer is correct
The correct answer is C. ( (7,10) ). Putting (y=x+3) gives (2x+3=17), so (x=7) and (y=10). Solve the one-variable equation formed after substitution.
Step 3
Exam Tip
(y=x+3) रखने पर (2x+3=17), इसलिए (x=7) और (y=10)। प्रतिस्थापन के बाद बने एक चर के समीकरण को हल करें।
Login to save your score, XP, coins and progress. Login
समीकरण (y=12-2x) में (x=5) रखने पर (y) क्या होगा?
In (y=12-2x), if (x=5), what is (y)?
#linear equations
#substitution
#expression value
#easy
#class 10
A (y=1)
B (y=2)
C (y=3)
D (y=4)
Explanation opens after your attempt
Step 1
Concept
(y=12-10=2). Multiply first and then subtract.
Step 2
Why this answer is correct
The correct answer is B. (y=2). (y=12-10=2). Multiply first and then subtract.
Step 3
Exam Tip
(y=12-10=2)। पहले गुणा करें और फिर घटाव करें।
Login to save your score, XP, coins and progress. Login
यदि (x-3y=1) और (y=2), तो (x) का मान क्या है?
If (x-3y=1) and (y=2), what is the value of (x)?
#linear equations
#substitution
#find x
#easy
#class 10
A (x=5)
B (x=6)
C (x=8)
D (x=7)
Explanation opens after your attempt
Step 1
Concept
(x-6=1), so (x=7). After substitution, move the constant term to the other side.
Step 2
Why this answer is correct
The correct answer is D. (x=7). (x-6=1), so (x=7). After substitution, move the constant term to the other side.
Step 3
Exam Tip
(x-6=1), इसलिए (x=7)। प्रतिस्थापन के बाद स्थिर पद को दूसरी तरफ ले जाएँ।
Login to save your score, XP, coins and progress. Login
समीकरण (x+y=15) और (x=2y) का हल क्या है?
What is the solution of (x+y=15) and (x=2y)?
#linear equations
#substitution
#ratio relation
#easy
#class 10
A ( (8,7) )
B ( (10,5) )
C ( (9,6) )
D ( (12,3) )
Explanation opens after your attempt
Correct Answer
B. ( (10,5) )
Step 1
Concept
Putting (x=2y) gives (3y=15), so (y=5) and (x=10). Substitution is easiest when a ratio relation is given.
Step 2
Why this answer is correct
The correct answer is B. ( (10,5) ). Putting (x=2y) gives (3y=15), so (y=5) and (x=10). Substitution is easiest when a ratio relation is given.
Step 3
Exam Tip
(x=2y) रखने पर (3y=15), इसलिए (y=5) और (x=10)। अनुपात वाले संबंध में प्रतिस्थापन सबसे आसान रहता है।
Login to save your score, XP, coins and progress. Login
समीकरण (3x-y=7) में (x=3) रखने पर (y) क्या होगा?
In (3x-y=7), if (x=3), what is (y)?
#linear equations
#substitution
#minus sign
#easy
#class 10
A (y=2)
B (y=3)
C (y=4)
D (y=5)
Explanation opens after your attempt
Step 1
Concept
(9-y=7), so (y=2). Be careful while solving a term with a negative sign.
Step 2
Why this answer is correct
The correct answer is A. (y=2). (9-y=7), so (y=2). Be careful while solving a term with a negative sign.
Step 3
Exam Tip
(9-y=7), इसलिए (y=2)। ऋण चिह्न वाले पद को हल करते समय सावधानी रखें।
Login to save your score, XP, coins and progress. Login
यदि (y=10-x) और (x=4), तो (y) का मान क्या है?
If (y=10-x) and (x=4), what is the value of (y)?
#linear equations
#substitution
#value
#easy
#class 10
A (y=4)
B (y=5)
C (y=7)
D (y=6)
Explanation opens after your attempt
Step 1
Concept
(y=10-4=6). In substitution, place the given value in the correct position.
Step 2
Why this answer is correct
The correct answer is D. (y=6). (y=10-4=6). In substitution, place the given value in the correct position.
Step 3
Exam Tip
(y=10-4=6)। प्रतिस्थापन में दिए गए मान को सही स्थान पर रखें।
Login to save your score, XP, coins and progress. Login
प्रतिस्थापन विधि से (2x+y=16) और (x-y=2) को हल करें।
Solve (2x+y=16) and (x-y=2) by substitution.
#linear equations
#substitution
#two equations
#easy
#class 10
A ( (5,6) )
B ( (6,4) )
C ( (4,8) )
D ( (7,2) )
Explanation opens after your attempt
Correct Answer
B. ( (6,4) )
Step 1
Concept
From (x-y=2), (y=x-2), so (2x+x-2=16) and (x=6). Then (y=4).
Step 2
Why this answer is correct
The correct answer is B. ( (6,4) ). From (x-y=2), (y=x-2), so (2x+x-2=16) and (x=6). Then (y=4).
Step 3
Exam Tip
(x-y=2) से (y=x-2), इसलिए (2x+x-2=16) और (x=6)। फिर (y=4) मिलेगा।
Login to save your score, XP, coins and progress. Login
समीकरण (y=x+4) और (x+y=18) का हल क्या है?
What is the solution of (y=x+4) and (x+y=18)?
#linear equations
#substitution
#solution pair
#easy
#class 10
A ( (6,12) )
B ( (8,10) )
C ( (7,11) )
D ( (9,9) )
Explanation opens after your attempt
Correct Answer
C. ( (7,11) )
Step 1
Concept
Putting (y=x+4) gives (2x+4=18), so (x=7) and (y=11). In exams, put the expression directly into the other equation.
Step 2
Why this answer is correct
The correct answer is C. ( (7,11) ). Putting (y=x+4) gives (2x+4=18), so (x=7) and (y=11). In exams, put the expression directly into the other equation.
Step 3
Exam Tip
(y=x+4) रखने पर (2x+4=18), इसलिए (x=7) और (y=11)। परीक्षा में अभिव्यक्ति को सीधे दूसरे समीकरण में रखें।
Login to save your score, XP, coins and progress. Login
समीकरणों (x+2y=17) और (y=6) से (x) का मान ज्ञात कीजिए।
Find the value of (x) from (x+2y=17) and (y=6).
#linear equations
#substitution
#value of x
#easy
#class 10
A (x=3)
B (x=4)
C (x=5)
D (x=6)
Explanation opens after your attempt
Step 1
Concept
Putting (y=6) gives (x+12=17), so (x=5). The given value quickly gives the other variable.
Step 2
Why this answer is correct
The correct answer is C. (x=5). Putting (y=6) gives (x+12=17), so (x=5). The given value quickly gives the other variable.
Step 3
Exam Tip
(y=6) रखने पर (x+12=17), इसलिए (x=5)। सीधे दिए गए मान से दूसरा चर जल्दी मिलता है।
Login to save your score, XP, coins and progress. Login
समीकरणों (x=2y+1) और (x+y=13) का हल क्या है?
What is the solution of (x=2y+1) and (x+y=13)?
#linear equations
#substitution
#solution pair
#easy
#class 10
A (x=7,\ y=6)
B (x=8,\ y=5)
C (x=9,\ y=4)
D (x=10,\ y=3)
Explanation opens after your attempt
Correct Answer
C. (x=9,\ y=4)
Step 1
Concept
Substituting (x=2y+1) gives (3y+1=13), so (y=4) and (x=9). Combine like terms after substitution.
Step 2
Why this answer is correct
The correct answer is C. (x=9,\ y=4). Substituting (x=2y+1) gives (3y+1=13), so (y=4) and (x=9). Combine like terms after substitution.
Step 3
Exam Tip
(x=2y+1) रखने पर (3y+1=13), इसलिए (y=4) और (x=9)। प्रतिस्थापन के बाद समान पद जोड़ें।
Login to save your score, XP, coins and progress. Login
यदि (2x-3y=1) और (x=5), तो (y) का मान क्या है?
If (2x-3y=1) and (x=5), what is the value of (y)?
#linear equations
#substitution
#negative term
#easy
#class 10
A (y=3)
B (y=4)
C (y=5)
D (y=6)
Explanation opens after your attempt
Step 1
Concept
Putting (x=5) gives (10-3y=1), so (y=3). Watch the signs while solving a negative term.
Step 2
Why this answer is correct
The correct answer is A. (y=3). Putting (x=5) gives (10-3y=1), so (y=3). Watch the signs while solving a negative term.
Step 3
Exam Tip
(x=5) रखने पर (10-3y=1), इसलिए (y=3)। ऋण पद को हल करते समय चिन्हों का ध्यान रखें।
Login to save your score, XP, coins and progress. Login
यदि (x+3y=16) और (x-y=4), तो (x) और (y) के मान क्या हैं?
If (x+3y=16) and (x-y=4), what are the values of (x) and (y)?
#linear equations
#substitution
#solution pair
#easy
#class 10
A (x=6,\ y=4)
B (x=7,\ y=3)
C (x=8,\ y=2)
D (x=5,\ y=5)
Explanation opens after your attempt
Correct Answer
B. (x=7,\ y=3)
Step 1
Concept
From the second equation (x=y+4); substituting gives (4y+4=16), so (y=3) and (x=7). Choose the simpler equation for substitution.
Step 2
Why this answer is correct
The correct answer is B. (x=7,\ y=3). From the second equation (x=y+4); substituting gives (4y+4=16), so (y=3) and (x=7). Choose the simpler equation for substitution.
Step 3
Exam Tip
दूसरे समीकरण से (x=y+4); रखने पर (4y+4=16), इसलिए (y=3) और (x=7)। प्रतिस्थापन में सरल समीकरण चुनें।
Login to save your score, XP, coins and progress. Login
यदि (y=x-2) और (2x+y=13), तो सही हल कौन-सा है?
If (y=x-2) and (2x+y=13), which is the correct solution?
#linear equations
#substitution
#solution pair
#easy
#class 10
A (x=5,\ y=3)
B (x=4,\ y=5)
C (x=3,\ y=5)
D (x=6,\ y=2)
Explanation opens after your attempt
Correct Answer
A. (x=5,\ y=3)
Step 1
Concept
Substituting (y=x-2) gives (3x-2=13), so (x=5) and (y=3). Using the isolated variable makes solving easier.
Step 2
Why this answer is correct
The correct answer is A. (x=5,\ y=3). Substituting (y=x-2) gives (3x-2=13), so (x=5) and (y=3). Using the isolated variable makes solving easier.
Step 3
Exam Tip
(y=x-2) रखने पर (3x-2=13), इसलिए (x=5) और (y=3)। अलग किए हुए चर का उपयोग करना आसान रहता है।
Login to save your score, XP, coins and progress. Login
समीकरणों (3x+2y=22) और (x=4) में (y) का मान क्या है?
In the equations (3x+2y=22) and (x=4), what is the value of (y)?
#linear equations
#substitution
#value of y
#easy
#class 10
A (y=3)
B (y=4)
C (y=5)
D (y=6)
Explanation opens after your attempt
Step 1
Concept
Putting (x=4) gives (12+2y=22), so (y=5). Substitute the given value directly and simplify.
Step 2
Why this answer is correct
The correct answer is C. (y=5). Putting (x=4) gives (12+2y=22), so (y=5). Substitute the given value directly and simplify.
Step 3
Exam Tip
(x=4) रखने पर (12+2y=22), इसलिए (y=5)। दिए हुए मान को सीधे रखकर समीकरण सरल करें।
Login to save your score, XP, coins and progress. Login
समीकरण (x+3y=15) और (y=3) से (x) क्या होगा?
From (x+3y=15) and (y=3), what is (x)?
#linear equations
#substitution
#find x
#easy
#class 10
A (x=3)
B (x=6)
C (x=9)
D (x=12)
Explanation opens after your attempt
Step 1
Concept
(x+9=15), so (x=6). After substitution, solve the remaining one-variable equation.
Step 2
Why this answer is correct
The correct answer is B. (x=6). (x+9=15), so (x=6). After substitution, solve the remaining one-variable equation.
Step 3
Exam Tip
(x+9=15), इसलिए (x=6)। प्रतिस्थापन के बाद शेष एक चर का समीकरण हल करें।
Login to save your score, XP, coins and progress. Login
यदि (2x-y=1) और (x=5), तो (y) का मान क्या है?
If (2x-y=1) and (x=5), what is (y)?
#linear equations
#substitution
#negative coefficient
#easy
#class 10
A (y=9)
B (y=8)
C (y=7)
D (y=6)
Explanation opens after your attempt
Step 1
Concept
(10-y=1), so (y=9). In this type of question, solve (-y) correctly.
Step 2
Why this answer is correct
The correct answer is A. (y=9). (10-y=1), so (y=9). In this type of question, solve (-y) correctly.
Step 3
Exam Tip
(10-y=1), इसलिए (y=9)। इस प्रकार के प्रश्न में (-y) को सही तरह हल करें।
Login to save your score, XP, coins and progress. Login
