Question
$$118-x = 4+5x$$
Answer
$$ x = 19 $$
Explanation
$$ \begin{aligned} 118-x &= 4+5x&& \text{move the $ \color{blue}{ 5x } $ to the left side and $ \color{blue}{ 118 }$ to the right} \\[1 em]-x-5x &= 4-118&& \text{simplify left and right hand side} \\[1 em]-6x &= -114&& \text{ divide both sides by $ -6 $ } \\[1 em]x &= \frac{-114}{-6}&& \\[1 em]x &= 19&& \\[1 em] \end{aligned} $$
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