$$ \begin{aligned} x+\frac{4}{2} &= 3&& \text{multiply ALL terms by } \color{blue}{ 2 }. \\[1 em]2x+2\cdot\frac{4}{2} &= 2\cdot3&& \text{cancel out the denominators} \\[1 em]2x+4 &= 6&& \text{ move 4 to the right } \\[1 em]2x &= 6-4&& \\[1 em]2x &= 2&& \text{ divide both sides by $ 2 $ } \\[1 em]x &= \frac{2}{2}&& \\[1 em]x &= 1&& \\[1 em] \end{aligned} $$

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