समीकरणों (2x+3y=19) और (4x-y=3) का हल क्या है?
What is the solution of (2x+3y=19) and (4x-y=3)?
Explanation opens after your attempt
B. (x=2,\ y=5)
Concept
Use (y=4x-3) from the second equation. Substitution gives (14x=28), so (x=2,\ y=5).
Why this answer is correct
The correct answer is B. (x=2,\ y=5). Use (y=4x-3) from the second equation. Substitution gives (14x=28), so (x=2,\ y=5).
Exam Tip
दूसरे समीकरण से (y=4x-3) रखें। पहले में रखने पर (14x=28), इसलिए (x=2,\ y=5)।
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