Question
Evaluate:
3x − 2x − 4x + 7x
3x − 2x − 4x + 7x
✓
Answer
3x − 2x − 4x + 7x
= 3x + 7x − 2x − 4x
= (3 + 7) × x − (2 + 4) × x
= 10x − 6x
= 4x
= 3x + 7x − 2x − 4x
= (3 + 7) × x − (2 + 4) × x
= 10x − 6x
= 4x
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