$$ \begin{aligned} \frac{13x+5}{3} &= 54&& \text{multiply ALL terms by } \color{blue}{ 3 }. \\[1 em]3 \cdot \frac{13x+5}{3} &= 3\cdot54&& \text{cancel out the denominators} \\[1 em]13x+5 &= 162&& \text{ move 5 to the right } \\[1 em]13x &= 162-5&& \\[1 em]13x &= 157&& \text{ divide both sides by $ 13 $ } \\[1 em]x &= \frac{157}{13}&& \\[1 em] \end{aligned} $$

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