Evaluate
\frac{f}{7}-\frac{1}{14}
Factor
\frac{2f-1}{14}
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\frac{2f}{14}-\frac{1}{14}
To add or subtract expressions, expand them to make their denominators the same. Least common multiple of 7 and 14 is 14. Multiply \frac{f}{7} times \frac{2}{2}.
\frac{2f-1}{14}
Since \frac{2f}{14} and \frac{1}{14} have the same denominator, subtract them by subtracting their numerators.
\frac{2f-1}{14}
Factor out \frac{1}{14}.
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