SOLUTION: Acertain instructor's age is now seven-ninths of what will be 18 years from now. Just how old is he now?

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Question 159785: Acertain instructor's age is now seven-ninths of what will be 18 years from now. Just how old is he now?
Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
A certain instructor's age is now seven-ninths of what will be 18 years from now. Just how old is he now?
.
Let x = age of instructor
.
x = (7/9)(x+18)
9x = 7(x+18)
9x = 7x+126
2x = 126
x = 63 years old