SAT Math Multiple Choice Practice Question 114: Answer and Explanation

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Question: 114

4. If 3a + 2b = -4, and 2a + 3b = -11, then 5a - 5b =

A. -15
B. 5
C. 7
D. 15
E. 35

Correct Answer: E

Explanation:

E. You can choose from a bunch of ways to do this problem, but the best is to notice that you can subtract the two given equations like so:

So 5a - 5b = 35.

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