Solve for x
x=4
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45x+540-60x=480
Use the distributive property to multiply 60 by 9-x.
-15x+540=480
Combine 45x and -60x to get -15x.
-15x=480-540
Subtract 540 from both sides.
-15x=-60
Subtract 540 from 480 to get -60.
x=\frac{-60}{-15}
Divide both sides by -15.
x=4
Divide -60 by -15 to get 4.
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