Factor
\frac{3\left(7c-4\right)}{4}
Evaluate
\frac{21c}{4}-3
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\frac{c+20c-12}{4}
Factor out \frac{1}{4}.
21c-12
Consider c+20c-12. Multiply and combine like terms.
3\left(7c-4\right)
Consider 21c-12. Factor out 3.
\frac{3\left(7c-4\right)}{4}
Rewrite the complete factored expression.
\frac{21}{4}c-3
Combine \frac{c}{4} and 5c to get \frac{21}{4}c.
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