aig math(Ms.Sue)
posted by May .
Both Todd and Zack earn the same salary. Todd spent $716 and Zack spent $128. Then Zack had 4 times the amount of money Todd had left. How much is their salary?
Please tell me how and what your answer is?

Let x = salary
x  128 = 4(x  716)
x  128 = 4x  2,864
I'll let you solve for x.
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