Write as a Single Logarithm 3- log base 2 of x-1/3 log base 2 of y

$3 - \log_{2} (x) - \frac{1}{3} \log_{2} (y)$

Reorder $\log_{2} (y)$ and $\frac{1}{3}$ .

$3 - \log_{2} (x) - (\frac{1}{3} \log_{2} (y))$

Simplify $\frac{1}{3} \log_{2} (y)$ by moving $\frac{1}{3}$ inside the logarithm.

$3 - \log_{2} (x) - \log_{2} (y^{\frac{1}{3}})$