Solve for f
f=\frac{2}{3}\approx 0.666666667
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f=\frac{5}{6}-\frac{1}{6}
Subtract \frac{1}{6} from both sides.
f=\frac{5-1}{6}
Since \frac{5}{6} and \frac{1}{6} have the same denominator, subtract them by subtracting their numerators.
f=\frac{4}{6}
Subtract 1 from 5 to get 4.
f=\frac{2}{3}
Reduce the fraction \frac{4}{6} to lowest terms by extracting and canceling out 2.
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