Solve for x
x=440
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100-0.1x-0.1x=12
Subtract 0.1x from both sides.
100-0.2x=12
Combine -0.1x and -0.1x to get -0.2x.
-0.2x=12-100
Subtract 100 from both sides.
-0.2x=-88
Subtract 100 from 12 to get -88.
x=\frac{-88}{-0.2}
Divide both sides by -0.2.
x=\frac{-880}{-2}
Expand \frac{-88}{-0.2} by multiplying both numerator and the denominator by 10.
x=440
Divide -880 by -2 to get 440.
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