यदि (3x+2y=130) और (2x+3y=120), तो (y) का मान क्या होगा?
If (3x+2y=130) and (2x+3y=120), what will be the value of (y)?
Explanation opens after your attempt
C. (20)
Concept
Multiply the first equation by (3) and the second by (2), then subtract. This gives (5x=150), then (y=20).
Why this answer is correct
The correct answer is C. (20). Multiply the first equation by (3) and the second by (2), then subtract. This gives (5x=150), then (y=20).
Exam Tip
पहले समीकरण को (3) और दूसरे को (2) से गुणा कर घटाएं। इससे (5x=150), फिर (y=20)।
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