Solve for a
a=\frac{1}{3}\approx 0.333333333
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\frac{20}{60}=a
Divide both sides by 60.
\frac{1}{3}=a
Reduce the fraction \frac{20}{60} to lowest terms by extracting and canceling out 20.
a=\frac{1}{3}
Swap sides so that all variable terms are on the left hand side.
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