Solve for x
x=-8
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\frac{30}{2}=7-x
Divide both sides by 2.
15=7-x
Divide 30 by 2 to get 15.
7-x=15
Swap sides so that all variable terms are on the left hand side.
-x=15-7
Subtract 7 from both sides.
-x=8
Subtract 7 from 15 to get 8.
x=-8
Multiply both sides by -1.
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