Solve for x
x=30
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75-2x-x=-15
Subtract x from both sides.
75-3x=-15
Combine -2x and -x to get -3x.
-3x=-15-75
Subtract 75 from both sides.
-3x=-90
Subtract 75 from -15 to get -90.
x=\frac{-90}{-3}
Divide both sides by -3.
x=30
Divide -90 by -3 to get 30.
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