Solve for x
x=18
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36=54-x
Multiply both sides of the equation by 54, the least common multiple of 3,54.
54-x=36
Swap sides so that all variable terms are on the left hand side.
-x=36-54
Subtract 54 from both sides.
-x=-18
Subtract 54 from 36 to get -18.
x=18
Multiply both sides by -1.
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