$$ \begin{aligned} 4x+4 &= \frac{144}{5}&& \text{multiply ALL terms by } \color{blue}{ 5 }. \\[1 em]5\cdot4x+5\cdot4 &= 5\cdot\frac{144}{5}&& \text{cancel out the denominators} \\[1 em]20x+20 &= 144&& \text{ move 20 to the right } \\[1 em]20x &= 144-20&& \\[1 em]20x &= 124&& \text{ divide both sides by $ 20 $ } \\[1 em]x &= \frac{124}{20}&& \\[1 em]x &= \frac{31}{5}&& \\[1 em] \end{aligned} $$

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