Answer
$\frac{5}{4}$
Work Step by Step
We know that $\log_a {x}-\log_a {y}=\log_a {\left(\frac{x}{y}\right)}$.
Hence,
$3^{\log_3{5}-\log_3 {4}}=3^{\log_3 {\left(\frac{5}{4}\right)}}$.
We also know that $a^{\log_a {x}}=x$.
Thus,
$3^{\log_3 {\left(\frac{5}{4}\right)}}=\frac{5}{4}$.
