$$ \begin{aligned} \frac{1}{4}(2x+20) &= 11&& \text{simplify left side} \\[1 em]\frac{2x+20}{4} &= 11&& \text{multiply ALL terms by } \color{blue}{ 4 }. \\[1 em]4 \cdot \frac{2x+20}{4} &= 4\cdot11&& \text{cancel out the denominators} \\[1 em]2x+20 &= 44&& \text{ move 20 to the right } \\[1 em]2x &= 44-20&& \\[1 em]2x &= 24&& \text{ divide both sides by $ 2 $ } \\[1 em]x &= \frac{24}{2}&& \\[1 em]x &= 12&& \\[1 em] \end{aligned} $$

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