Evaluate
\frac{d}{5}+3
Factor
\frac{d+15}{5}
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\frac{3\times 5}{5}+\frac{d}{5}
To add or subtract expressions, expand them to make their denominators the same. Multiply 3 times \frac{5}{5}.
\frac{3\times 5+d}{5}
Since \frac{3\times 5}{5} and \frac{d}{5} have the same denominator, add them by adding their numerators.
\frac{15+d}{5}
Do the multiplications in 3\times 5+d.
\frac{15+d}{5}
Factor out \frac{1}{5}.
Examples
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Limits
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