समीकरणों (6x+5y=47) और (2x-y=5) से (y) का मान क्या है?
What is the value of (y) from (6x+5y=47) and (2x-y=5)?
Explanation opens after your attempt
D. (y=4)
Concept
Use (y=2x-5) from the second equation. Substitution gives (16x=72), so \(x=\frac{9}{2}\) and (y=4).
Why this answer is correct
The correct answer is D. (y=4). Use (y=2x-5) from the second equation. Substitution gives (16x=72), so \(x=\frac{9}{2}\) and (y=4).
Exam Tip
दूसरे समीकरण से (y=2x-5) रखें। पहले में रखने पर (16x=72), इसलिए \(x=\frac{9}{2}\) और (y=4)।
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