Question
$$13-2(x+4) = 0$$
Answer
$$ x = \dfrac{5}{2} $$
Explanation
$$ \begin{aligned} 13-2(x+4) &= 0&& \text{simplify left side} \\[1 em]13-(2x+8) &= 0&& \\[1 em]13-2x-8 &= 0&& \\[1 em]-2x+5 &= 0&& \text{ move the constants to the right } \\[1 em]-2x &= -5&& \text{ divide both sides by $ -2 $ } \\[1 em]x &= \frac{-5}{-2}&& \\[1 em]x &= \frac{5}{2}&& \\[1 em] \end{aligned} $$
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