SAT Math Multiple Choice Practice Question 466: Answer and Explanation

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Question: 466

7. x - x =

A. -5x
B. -x
C. -x
D. x
E. 3x

Correct Answer: C

Explanation:

C This question is much easier if you work out the square roots first. You know that = 2 and = 3, so you can rewrite the question like this: 2x – 3x = –x.

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