व्यंजक (12-(4x-7)+3(x-5)) का सरल रूप क्या है?
What is the simplified form of (12-(4x-7)+3(x-5))?
Explanation opens after your attempt
B. (-x+4)
Concept
Expanding gives (12-4x+7+3x-15=-x+4). Change signs if a minus is before a bracket.
Why this answer is correct
The correct answer is B. (-x+4). Expanding gives (12-4x+7+3x-15=-x+4). Change signs if a minus is before a bracket.
Exam Tip
खोलने पर (12-4x+7+3x-15=-x+4) मिलता है। कोष्ठक से पहले ऋण हो तो चिह्न बदलें।
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