Question
$$20-4 = 32x$$
Answer
$$ x = \dfrac{1}{2} $$
Explanation
$$ \begin{aligned} 20-4 &= 32x&& \text{simplify left side} \\[1 em]16 &= 32x&& \text{ swap the left and right side of the equation } \\[1 em]32x &= 16&& \text{ divide both sides by $ 32 $ } \\[1 em]x &= \frac{16}{32}&& \\[1 em]x &= \frac{1}{2}&& \\[1 em] \end{aligned} $$
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