Evaluate
12a+\frac{13}{2}
Factor
\frac{24a+13}{2}
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12a+\frac{260}{40}
Multiply 3 and 4 to get 12.
12a+\frac{13}{2}
Reduce the fraction \frac{260}{40} to lowest terms by extracting and canceling out 20.
\frac{24a+13}{2}
Factor out \frac{1}{2}.
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