(12a+9a) का सरल रूप क्या है?

What is the simplified form of (12a+9a)?

Explanation opens after your attempt
Correct Answer

A. (21a)

Step 1

Concept

Coefficients of like terms are added, so (12a+9a=21a). The variable (a) does not change.

Step 2

Why this answer is correct

The correct answer is A. (21a). Coefficients of like terms are added, so (12a+9a=21a). The variable (a) does not change.

Step 3

Exam Tip

समान पदों के गुणांक जोड़े जाते हैं इसलिए (12a+9a=21a)। चर (a) नहीं बदलता।

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Mathematics Answer, Explanation and Revision Hints

(12a+9a) का सरल रूप क्या है? / What is the simplified form of (12a+9a)?

Correct Answer: A. (21a). Explanation: समान पदों के गुणांक जोड़े जाते हैं इसलिए (12a+9a=21a)। चर (a) नहीं बदलता। / Coefficients of like terms are added, so (12a+9a=21a). The variable (a) does not change.

Which concept should I revise for this Mathematics MCQ?

Coefficients of like terms are added, so (12a+9a=21a). The variable (a) does not change.

What exam hint can help solve this Mathematics question?

समान पदों के गुणांक जोड़े जाते हैं इसलिए (12a+9a=21a)। चर (a) नहीं बदलता।