Question
$$30-4w = 2w$$
Answer
$$ w = 5 $$
Explanation
$$ \begin{aligned} 30-4w &= 2w&& \text{move the $ \color{blue}{ 2w } $ to the left side and $ \color{blue}{ 30 }$ to the right} \\[1 em]-4w-2w &= -30&& \text{simplify left side} \\[1 em]-6w &= -30&& \text{ divide both sides by $ -6 $ } \\[1 em]w &= \frac{-30}{-6}&& \\[1 em]w &= 5&& \\[1 em] \end{aligned} $$
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