Question
$$\frac{x}{2}+5 = 11$$
Answer
$$ x = 12 $$
Explanation
$$ \begin{aligned} \frac{x}{2}+5 &= 11&& \text{multiply ALL terms by } \color{blue}{ 2 }. \\[1 em]2 \cdot \frac{x}{2}+2\cdot5 &= 2\cdot11&& \text{cancel out the denominators} \\[1 em]x+10 &= 22&& \text{ move 10 to the right } \\[1 em]x &= 22-10&& \\[1 em]x &= 12&& \\[1 em]x &= 12&& \\[1 em] \end{aligned} $$
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