Question
$$-20x+2 = -30x-18$$
Answer
$$ x = -2 $$
Explanation
$$ \begin{aligned} -20x+2 &= -30x-18&& \text{move the $ \color{blue}{ -30x } $ to the left side and $ \color{blue}{ 2 }$ to the right} \\[1 em]-20x+30x &= -18-2&& \text{simplify left and right hand side} \\[1 em]10x &= -20&& \text{ divide both sides by $ 10 $ } \\[1 em]x &= -\frac{20}{10}&& \\[1 em]x &= -2&& \\[1 em] \end{aligned} $$
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