Solve for x
x=9
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-9x-7-3x=-115
Subtract 3x from both sides.
-12x-7=-115
Combine -9x and -3x to get -12x.
-12x=-115+7
Add 7 to both sides.
-12x=-108
Add -115 and 7 to get -108.
x=\frac{-108}{-12}
Divide both sides by -12.
x=9
Divide -108 by -12 to get 9.
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