Solve for x
x=15
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-15-4x+8x=45
Add 8x to both sides.
-15+4x=45
Combine -4x and 8x to get 4x.
4x=45+15
Add 15 to both sides.
4x=60
Add 45 and 15 to get 60.
x=\frac{60}{4}
Divide both sides by 4.
x=15
Divide 60 by 4 to get 15.
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