Question
$$68 = 12h+100$$
Answer
$$ h = -\dfrac{8}{3} $$
Explanation
$$ \begin{aligned} 68 &= 12h+100&& \text{ swap the left and right side of the equation } \\[1 em]12h+100 &= 68&& \text{ move 100 to the right } \\[1 em]12h &= 68-100&& \\[1 em]12h &= -32&& \text{ divide both sides by $ 12 $ } \\[1 em]h &= -\frac{32}{12}&& \\[1 em]h &= -\frac{8}{3}&& \\[1 em] \end{aligned} $$
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