$$ \begin{aligned} 3 \cdot \frac{e}{5}+2 &= 11&& \text{multiply ALL terms by } \color{blue}{ 5 }. \\[1 em]5\cdot3 \cdot \frac{e}{5}+5\cdot2 &= 5\cdot11&& \text{cancel out the denominators} \\[1 em]3e+10 &= 55&& \text{ move 10 to the right } \\[1 em]3e &= 55-10&& \\[1 em]3e &= 45&& \text{ divide both sides by $ 3 $ } \\[1 em]e &= \frac{45}{3}&& \\[1 em]e &= 15&& \\[1 em] \end{aligned} $$

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