## Algebra and Trigonometry 10th Edition

$\log_3\frac{21}{5}=1+\log_37-\log_35$
Use the Quotient Property and the Product Property. Also remember that $\log_aa=1$: $\log_3\frac{21}{5}=\log_321-\log_35=\log_3(3·7)-\log_35=\log_33+\log_37-\log_35=1+\log_37-\log_35$