Solve for x
x=15
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15=-x+30
Multiply both sides of the equation by 3.
-x+30=15
Swap sides so that all variable terms are on the left hand side.
-x=15-30
Subtract 30 from both sides.
-x=-15
Subtract 30 from 15 to get -15.
x=15
Multiply both sides by -1.
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