$$ \begin{aligned} 11x+9 &= 4(6x-1)&& \text{simplify right side} \\[1 em]11x+9 &= 24x-4&& \text{move the $ \color{blue}{ 24x } $ to the left side and $ \color{blue}{ 9 }$ to the right} \\[1 em]11x-24x &= -4-9&& \text{simplify left and right hand side} \\[1 em]-13x &= -13&& \text{ divide both sides by $ -13 $ } \\[1 em]x &= \frac{-13}{-13}&& \\[1 em]x &= 1&& \\[1 em] \end{aligned} $$

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