SSAT Math Question 271: Answer and Explanation
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Question: 271
5. If 
, then x =
- A. 21
- B. 14
- C. 7
- D.
Correct Answer: A
Explanation:
The answer is A
First, create a common denominator for the fractions: 
. Next, add the fractions: 
. Because 36 is three times 12, multiply 7 by 3 to find x: 21. Alternatively, you can cross multiply and divide by 12 to solve for x.
Test the answers to determine which one allows the equation to balance.