SSAT Math Question 268: Answer and Explanation

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Question: 268

2. If , then x =

A.
B.
C.
D. 6

Correct Answer: B

Explanation:

The answer is B

First, cross multiply: 7x + 21 = 15. Next, subtract 21 from both sides: 7x = -6. Divide both sides by 7: x = -.

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