Answer
$ \log _{a}\left(\frac{M}{N}\right)=\log _{a} M-\log _{a} N$
Work Step by Step
Recall the quotient rule for logarithms:
$$\log _{a}\left(\frac{A}{B}\right)=\log_a{A}-\log_a{B}$$
Therefore,
$$\log _{a}\left(\frac{M}{N}\right)=\log _{a} M-\log _{a} N$$