Solve for x
x=-13
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-x-20+5x=-72
Add 5x to both sides.
-x+5x=-72+20
Add 20 to both sides.
-x+5x=-52
Add -72 and 20 to get -52.
4x=-52
Combine -x and 5x to get 4x.
x=\frac{-52}{4}
Divide both sides by 4.
x=-13
Divide -52 by 4 to get -13.
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