Solve for x
x=10
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-0.2x+72=70
Combine 1.6x and -1.8x to get -0.2x.
-0.2x=70-72
Subtract 72 from both sides.
-0.2x=-2
Subtract 72 from 70 to get -2.
x=\frac{-2}{-0.2}
Divide both sides by -0.2.
x=\frac{-20}{-2}
Expand \frac{-2}{-0.2} by multiplying both numerator and the denominator by 10.
x=10
Divide -20 by -2 to get 10.
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