Solve for x
x = \frac{285}{4} = 71\frac{1}{4} = 71.25
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40x+120x-7800=3600
Use the distributive property to multiply 120 by x-65.
160x-7800=3600
Combine 40x and 120x to get 160x.
160x=3600+7800
Add 7800 to both sides.
160x=11400
Add 3600 and 7800 to get 11400.
x=\frac{11400}{160}
Divide both sides by 160.
x=\frac{285}{4}
Reduce the fraction \frac{11400}{160} to lowest terms by extracting and canceling out 40.
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