समीकरण (y=x+4) और (x+y=18) का हल क्या है?
What is the solution of (y=x+4) and (x+y=18)?
Explanation opens after your attempt
C. ( (7,11) )
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.
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.
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।
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