Question
$$2x+6 = -4x$$
Answer
$$ x = -1 $$
Explanation
$$ \begin{aligned} 2x+6 &= -4x&& \text{move the $ \color{blue}{ -4x } $ to the left side and $ \color{blue}{ 6 }$ to the right} \\[1 em]2x+4x &= -6&& \text{simplify left side} \\[1 em]6x &= -6&& \text{ divide both sides by $ 6 $ } \\[1 em]x &= -\frac{6}{6}&& \\[1 em]x &= -1&& \\[1 em] \end{aligned} $$
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