Evaluate
\frac{21}{2}=10.5
Factor
\frac{3 \cdot 7}{2} = 10\frac{1}{2} = 10.5
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\frac{1}{2}+\frac{20}{2}
Convert 10 to fraction \frac{20}{2}.
\frac{1+20}{2}
Since \frac{1}{2} and \frac{20}{2} have the same denominator, add them by adding their numerators.
\frac{21}{2}
Add 1 and 20 to get 21.
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