SAT Math Multiple Choice Practice Question 481: Answer and Explanation

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Question: 481

1. If 2x + 10 = 16, what is the value of 2x -10 ?

A. -4
B. -3
C. 3
D. 4
E. 6

Correct Answer: A

Explanation:

A Subtract 10 from both sides to find 2x = 6, then substitute 6 for 2x. 6 – 10 = –4. You could also solve for x, and then plug that into the expression. If 2x = 6, then x = 3. So, 2(3) – 10 = 6 – 10 = –4.

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