किस संख्या से (2x+3y=13) को गुणा करना चाहिए ताकि (4x-5y=1) के साथ (x) हट सके?

By what number should (2x+3y=13) be multiplied so that (x) can be eliminated with (4x-5y=1)?

Explanation opens after your attempt
Correct Answer

B. (-2)

Step 1

Concept

Multiplying (2x) by (-2) gives (-4x). It cancels with (4x) when added.

Step 2

Why this answer is correct

The correct answer is B. (-2). Multiplying (2x) by (-2) gives (-4x). It cancels with (4x) when added.

Step 3

Exam Tip

(2x) को (-2) से गुणा करने पर (-4x) बनेगा। यह (4x) के साथ जुड़कर हट जाएगा।

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Mathematics Answer, Explanation and Revision Hints

किस संख्या से (2x+3y=13) को गुणा करना चाहिए ताकि (4x-5y=1) के साथ (x) हट सके? / By what number should (2x+3y=13) be multiplied so that (x) can be eliminated with (4x-5y=1)?

Correct Answer: B. (-2). Explanation: (2x) को (-2) से गुणा करने पर (-4x) बनेगा। यह (4x) के साथ जुड़कर हट जाएगा। / Multiplying (2x) by (-2) gives (-4x). It cancels with (4x) when added.

Which concept should I revise for this Mathematics MCQ?

Multiplying (2x) by (-2) gives (-4x). It cancels with (4x) when added.

What exam hint can help solve this Mathematics question?

(2x) को (-2) से गुणा करने पर (-4x) बनेगा। यह (4x) के साथ जुड़कर हट जाएगा।