SSAT Math Question 270: Answer and Explanation

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Question: 270

4. If 5x – 7 = 2x + 8, then x =

A.
B.
C.
D. 5

Correct Answer: D

Explanation:

The answer is D

First, add 7 to both sides and subtract 2x from both sides: 3x = 15. Then, divide both sides by 3: x = 5.

Test the answers to determine which one allows the equation to balance.