$$ \begin{aligned} 8(y+6)+24 &= 3(y+12)+11y&& \text{simplify left and right hand side} \\[1 em]8y+48+24 &= 3y+36+11y&& \\[1 em]8y+72 &= 14y+36&& \text{move the $ \color{blue}{ 14y } $ to the left side and $ \color{blue}{ 72 }$ to the right} \\[1 em]8y-14y &= 36-72&& \text{simplify left and right hand side} \\[1 em]-6y &= -36&& \text{ divide both sides by $ -6 $ } \\[1 em]y &= \frac{-36}{-6}&& \\[1 em]y &= 6&& \\[1 em] \end{aligned} $$

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