Solve for x
x = \frac{51}{20} = 2\frac{11}{20} = 2.55
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40x+90-80x=-12
Subtract 80x from both sides.
-40x+90=-12
Combine 40x and -80x to get -40x.
-40x=-12-90
Subtract 90 from both sides.
-40x=-102
Subtract 90 from -12 to get -102.
x=\frac{-102}{-40}
Divide both sides by -40.
x=\frac{51}{20}
Reduce the fraction \frac{-102}{-40} to lowest terms by extracting and canceling out -2.
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