Question
$$12h = 4(2h-5)$$
Answer
$$ h = -5 $$
Explanation
$$ \begin{aligned} 12h &= 4(2h-5)&& \text{simplify right side} \\[1 em]12h &= 8h-20&& \text{move the $ \color{blue}{ 8h } $ to the left side} \\[1 em]12h-8h &= -20&& \text{simplify left side} \\[1 em]4h &= -20&& \text{ divide both sides by $ 4 $ } \\[1 em]h &= -\frac{20}{4}&& \\[1 em]h &= -5&& \\[1 em] \end{aligned} $$
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