SAT Math Multiple Choice Practice Question 27: Answer and Explanation

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Question: 27

5. The solution set to the equation is

A. {2}
B. {22/3}
C. {-2}
D. {-2, 22/3}
E. {-2, 2}

Correct Answer: D


D. In general, absolute-value equations have two solutions, so even if you don't know how to do this problem, you can confidently guess Choice (B) or (D). To solve this problem the long way, do the following:

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