Question
Simplify: 5(x - 4) - 3(x - 4) + 7(x - 4)
✓
Answer
5(x - 4) - 3(x - 4) + 7(x - 4)
⇒ 5x - 20 - 3x + 12 + 7x - 28
⇒ 5x + 7x - 3x + 12 + 7x - 28
⇒ 12x - 3x - 48 + 12
⇒ 9x - 36
⇒ 5x - 20 - 3x + 12 + 7x - 28
⇒ 5x + 7x - 3x + 12 + 7x - 28
⇒ 12x - 3x - 48 + 12
⇒ 9x - 36
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