यदि (3x+2y=23) और (5x-2y=17), तो (x-y) का मान क्या है?

If (3x+2y=23) and (5x-2y=17), what is the value of (x-y)?

Explanation opens after your attempt
Correct Answer

C. (3)

Step 1

Concept

Adding both equations gives (8x=40), so (x=5). Then (3x+2y=23) gives (y=4), so (x-y=1).

Step 2

Why this answer is correct

The correct answer is C. (3). Adding both equations gives (8x=40), so (x=5). Then (3x+2y=23) gives (y=4), so (x-y=1).

Step 3

Exam Tip

दोनों समीकरण जोड़ने पर (8x=40), इसलिए (x=5)। फिर (3x+2y=23) से (y=4), इसलिए (x-y=1)।

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Mathematics Answer, Explanation and Revision Hints

यदि (3x+2y=23) और (5x-2y=17), तो (x-y) का मान क्या है? / If (3x+2y=23) and (5x-2y=17), what is the value of (x-y)?

Correct Answer: C. (3). Explanation: दोनों समीकरण जोड़ने पर (8x=40), इसलिए (x=5)। फिर (3x+2y=23) से (y=4), इसलिए (x-y=1)। / Adding both equations gives (8x=40), so (x=5). Then (3x+2y=23) gives (y=4), so (x-y=1).

Which concept should I revise for this Mathematics MCQ?

Adding both equations gives (8x=40), so (x=5). Then (3x+2y=23) gives (y=4), so (x-y=1).

What exam hint can help solve this Mathematics question?

दोनों समीकरण जोड़ने पर (8x=40), इसलिए (x=5)। फिर (3x+2y=23) से (y=4), इसलिए (x-y=1)।