$$ \begin{aligned} 9 &= \frac{8}{1}(9x+32)&& \text{simplify right side} \\[1 em]9 &= 8(9x+32)&& \\[1 em]9 &= 72x+256&& \text{ swap the left and right side of the equation } \\[1 em]72x+256 &= 9&& \text{ move 256 to the right } \\[1 em]72x &= 9-256&& \\[1 em]72x &= -247&& \text{ divide both sides by $ 72 $ } \\[1 em]x &= -\frac{247}{72}&& \\[1 em] \end{aligned} $$

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