SOLUTION: Shawn is 43 and matthew is 13. How many years ago was Shawn seven times as old as Matthew?

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Question 1005210: Shawn is 43 and matthew is 13. How many years ago was Shawn seven times as old as Matthew?
Answer by ikleyn(52781) About Me  (Show Source):
You can put this solution on YOUR website!
.
Solve an equation

%2843-x%29%2F%287-x%29 = 7.

Answer. x = 1. One year ago.