$$ \begin{aligned} 36+3x+5 &= 8x-15&& \text{simplify left side} \\[1 em]3x+41 &= 8x-15&& \text{move the $ \color{blue}{ 8x } $ to the left side and $ \color{blue}{ 41 }$ to the right} \\[1 em]3x-8x &= -15-41&& \text{simplify left and right hand side} \\[1 em]-5x &= -56&& \text{ divide both sides by $ -5 $ } \\[1 em]x &= \frac{-56}{-5}&& \\[1 em]x &= \frac{56}{5}&& \\[1 em] \end{aligned} $$

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