Solve for x
x=18
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54-2x=x
Combine -x and -x to get -2x.
54-2x-x=0
Subtract x from both sides.
54-3x=0
Combine -2x and -x to get -3x.
-3x=-54
Subtract 54 from both sides. Anything subtracted from zero gives its negation.
x=\frac{-54}{-3}
Divide both sides by -3.
x=18
Divide -54 by -3 to get 18.
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