SOLUTION: Can you please help me set up this proportional equation? x+9/7 = x-12/4

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Question 28883: Can you please help me set up this proportional equation?
x+9/7 = x-12/4
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
(x+9)/7 = (x-12)/4
Cross-multiply to get:
4(x+9) = 7(x-12)
4x+36 = 7x-84
3x=120
x=40
Cheers,
Stan H.