यदि (3x+my=23) और (x-y=1) का हल (x=5,\ y=4) है, तो (m) का मान क्या है?
If (3x+my=23) and (x-y=1) have solution (x=5,\ y=4), what is the value of (m)?
Explanation opens after your attempt
A. (m=2)
Concept
Put (x=5,\ y=4) in (3x+my=23). Then (15+4m=23), so (m=2).
Why this answer is correct
The correct answer is A. (m=2). Put (x=5,\ y=4) in (3x+my=23). Then (15+4m=23), so (m=2).
Exam Tip
(x=5,\ y=4) को (3x+my=23) में रखें। (15+4m=23), इसलिए (m=2)।
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