$$ \begin{aligned} 17x+5 &= -3x+25&& \text{move the $ \color{blue}{ -3x } $ to the left side and $ \color{blue}{ 5 }$ to the right} \\[1 em]17x+3x &= 25-5&& \text{simplify left and right hand side} \\[1 em]20x &= 20&& \text{ divide both sides by $ 20 $ } \\[1 em]x &= \frac{20}{20}&& \\[1 em]x &= 1&& \\[1 em] \end{aligned} $$
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