$$ \begin{aligned} 5x+33-16 &= -5x-106&& \text{simplify left side} \\[1 em]5x+17 &= -5x-106&& \text{move the $ \color{blue}{ -5x } $ to the left side and $ \color{blue}{ 17 }$ to the right} \\[1 em]5x+5x &= -106-17&& \text{simplify left and right hand side} \\[1 em]10x &= -123&& \text{ divide both sides by $ 10 $ } \\[1 em]x &= -\frac{123}{10}&& \\[1 em] \end{aligned} $$

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