समीकरण (y=2x) और (x+y=12) का हल क्या है?
What is the solution of (y=2x) and (x+y=12)?
Explanation opens after your attempt
B. ( (4,8) )
Concept
Putting (y=2x) gives (3x=12), so (x=4) and (y=8). Add coefficients to solve quickly.
Why this answer is correct
The correct answer is B. ( (4,8) ). Putting (y=2x) gives (3x=12), so (x=4) and (y=8). Add coefficients to solve quickly.
Exam Tip
(y=2x) रखने पर (3x=12), इसलिए (x=4) और (y=8)। गुणांक जोड़कर जल्दी हल करें।
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