Question
$$\frac{x}{2}-7 = 9$$
Answer
$$ x = 32 $$
Explanation
$$ \begin{aligned} \frac{x}{2}-7 &= 9&& \text{multiply ALL terms by } \color{blue}{ 2 }. \\[1 em]2 \cdot \frac{x}{2}-2\cdot7 &= 2\cdot9&& \text{cancel out the denominators} \\[1 em]x-14 &= 18&& \text{ move -14 to the right } \\[1 em]x &= 18+14&& \\[1 em]x &= 32&& \\[1 em]x &= 32&& \\[1 em] \end{aligned} $$
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