PSAT Math Multiple-Choice Question 805: Answer and Explanation
Question: 805
3a - 3(b - a) can also be expressed as:
- A. 2a - 3b
- B. 3a2 - 3ab
- C. -b + a
- D. 3(2a - b)
Correct Answer: D
Explanation:
(D) Expand the expression and factor:
3a - 3(b - a) → 3a - 3b + 3a → 6a - 3b → factor → 3(2a - b)
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