Solve for x
x=-39
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85=-2x+7
Combine -6x and 4x to get -2x.
-2x+7=85
Swap sides so that all variable terms are on the left hand side.
-2x=85-7
Subtract 7 from both sides.
-2x=78
Subtract 7 from 85 to get 78.
x=\frac{78}{-2}
Divide both sides by -2.
x=-39
Divide 78 by -2 to get -39.
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