Evaluate
-\frac{2}{5}=-0.4
Factor
-\frac{2}{5} = -0.4
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\frac{20}{40-90}
Multiply 2 and 20 to get 40.
\frac{20}{-50}
Subtract 90 from 40 to get -50.
-\frac{2}{5}
Reduce the fraction \frac{20}{-50} to lowest terms by extracting and canceling out 10.
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