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
Correct Answer

A. (m=2)

Step 1

Concept

Put (x=5,\ y=4) in (3x+my=23). Then (15+4m=23), so (m=2).

Step 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).

Step 3

Exam Tip

(x=5,\ y=4) को (3x+my=23) में रखें। (15+4m=23), इसलिए (m=2)।

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Mathematics Answer, Explanation and Revision Hints

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)?

Correct Answer: A. (m=2). Explanation: (x=5,\ y=4) को (3x+my=23) में रखें। (15+4m=23), इसलिए (m=2)। / Put (x=5,\ y=4) in (3x+my=23). Then (15+4m=23), so (m=2).

Which concept should I revise for this Mathematics MCQ?

Put (x=5,\ y=4) in (3x+my=23). Then (15+4m=23), so (m=2).

What exam hint can help solve this Mathematics question?

(x=5,\ y=4) को (3x+my=23) में रखें। (15+4m=23), इसलिए (m=2)।