यदि (x+y=9) और (y=4), तो (x) का मान क्या है?

If (x+y=9) and (y=4), what is the value of (x)?

Explanation opens after your attempt
Correct Answer

C. (x=5)

Step 1

Concept

Putting (y=4) gives (x+4=9), so (x=5). After substitution, use simple subtraction carefully.

Step 2

Why this answer is correct

The correct answer is C. (x=5). Putting (y=4) gives (x+4=9), so (x=5). After substitution, use simple subtraction carefully.

Step 3

Exam Tip

(y=4) रखने पर (x+4=9), इसलिए (x=5)। परीक्षा में प्रतिस्थापन के बाद सरल घटाव करें।

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Mathematics Answer, Explanation and Revision Hints

यदि (x+y=9) और (y=4), तो (x) का मान क्या है? / If (x+y=9) and (y=4), what is the value of (x)?

Correct Answer: C. (x=5). Explanation: (y=4) रखने पर (x+4=9), इसलिए (x=5)। परीक्षा में प्रतिस्थापन के बाद सरल घटाव करें। / Putting (y=4) gives (x+4=9), so (x=5). After substitution, use simple subtraction carefully.

Which concept should I revise for this Mathematics MCQ?

Putting (y=4) gives (x+4=9), so (x=5). After substitution, use simple subtraction carefully.

What exam hint can help solve this Mathematics question?

(y=4) रखने पर (x+4=9), इसलिए (x=5)। परीक्षा में प्रतिस्थापन के बाद सरल घटाव करें।