Class 9 Mathematics - MIX - Addition of Expressions Easy Quiz

Mathematics MIX Addition of Expressions Easy Class 9 Topic Quiz

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Question 1/1 Easy Mathematics MIX Addition of Expressions Class 9 Level 2

\((6u+2v)\) और \((3u+5v)\) को जोड़ने पर प्राप्त व्यंजक क्या होगा?

What expression is obtained by adding \((6u+2v)\) and \((3u+5v)\)?

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Correct Answer

A. \(9u+7v\)

Explanation

Simple Explanation

समान पदों को अलग-अलग जोड़ते हैं: \(6u+3u=9u\) और \(2v+5v=7v\)। इसलिए योग \(9u+7v\) है। विकल्प B में अलग-अलग चर \(u\) और \(v\) को गुणा कर दिया गया है, जबकि जोड़ में ऐसा नहीं किया जाता। परीक्षा-युक्ति: केवल समान चर वाले पदों के गुणांकों को जोड़ें और चर को वही रहने दें। / Add like terms separately: \(6u+3u=9u\) and \(2v+5v=7v\). Therefore, the sum is \(9u+7v\). Option B incorrectly multiplies the different variables \(u\) and \(v\), which is not done when adding expressions. Exam tip: add the coefficients of terms with the same variable and keep the variable unchanged.

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