SSAT Math Question 272: Answer and Explanation
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Question: 272
6. If 
, then x =
- A. 12
- B. 4
- C. 3
- D. 2
Correct Answer: B
Explanation:
The answer is B
First, cross multiply: 2(21 + x) = 11x + 6. Next, distribute the 2: 42 + 2x = 11x + 6. Now, subtract 2x and 6 from both sides: 36 = 9x. Last, divide both sides by 9 to get x = 4.
Test the answers to determine which one allows the equation to balance.