$$ \begin{aligned} 8+\frac{393}{5}x &= 4&& \text{multiply ALL terms by } \color{blue}{ 5 }. \\[1 em]5\cdot8+5 \cdot \frac{393}{5}x &= 5\cdot4&& \text{cancel out the denominators} \\[1 em]40+393x &= 20&& \text{ move 40 to the right } \\[1 em]393x &= 20-40&& \\[1 em]393x &= -20&& \text{ divide both sides by $ 393 $ } \\[1 em]x &= -\frac{20}{393}&& \\[1 em] \end{aligned} $$

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