Question 1126052
A man's age is now five ninths of what it will be in 18 years from now. How old is he now? 
:
I think your equation is correct
x = {{{5/9}}}(x+18)
9x = 5(x+18)
9x = 5x + 90
9x - 5x = 90
4x = 90
x = 90/4
x = 22.5, not an integer
but it checks out
22.5 = {{{5/9}}}(22.5+18)
22.5 = {{{5/9}}}(40.5)
22.5 = 22.5
Whoever created this problem, screwed it up!