SAT Math Multiple Choice Practice Question 114: Answer and Explanation
4. If 3a + 2b = -4, and 2a + 3b = -11, then 5a - 5b =
Correct Answer: E
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.