Question
$$x+2 = 3x+4$$
Answer
$$ x = -1 $$
Explanation
$$ \begin{aligned} x+2 &= 3x+4&& \text{move the $ \color{blue}{ 3x } $ to the left side and $ \color{blue}{ 2 }$ to the right} \\[1 em]x-3x &= 4-2&& \text{simplify left and right hand side} \\[1 em]-2x &= 2&& \text{ divide both sides by $ -2 $ } \\[1 em]x &= -\frac{2}{2}&& \\[1 em]x &= -1&& \\[1 em] \end{aligned} $$
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