Chapter 12 - Exponential Functions and Logarithmic Functions - 12.4 Properties of Logarithmic Functions - 12.4 Exercise Set - Page 810: 23

$\log_2 5-\log_2 11$

Using $\log_b \dfrac{x}{y}=\log_b x-\log_b y$ (or the logarithm of a quotient), the given logarithmic equation, $ \log_2 \dfrac{5}{11} ,$ is equivalent to \begin{array}{l}\require{cancel} \log_2 5-\log_2 11 .\end{array}