Answer
$\emptyset$
Work Step by Step
Use quotient and power rules, we have $ln(x)-ln3^4=ln(\frac{x}{5})\longrightarrow ln(\frac{x}{3^4})=ln(\frac{x}{5})\longrightarrow \frac{x}{3^4}=\frac{x}{5}\longrightarrow \frac{1}{3^4}=\frac{1}{5}$ which is inconsistent, thus the solution set is $\emptyset$
