$$2 \cdot \frac{x}{4} = 30$$
Answer
$$ x = 60 $$
Explanation
$$ \begin{aligned} 2 \cdot \frac{x}{4} &= 30&& \text{multiply ALL terms by } \color{blue}{ 4 }. \\[1 em]4\cdot2 \cdot \frac{x}{4} &= 4\cdot30&& \text{cancel out the denominators} \\[1 em]2x &= 120&& \text{ divide both sides by $ 2 $ } \\[1 em]x &= \frac{120}{2}&& \\[1 em]x &= 60&& \\[1 em] \end{aligned} $$
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