Question
$$3y-7 = y$$
Answer
$$ y = \dfrac{7}{2} $$
Explanation
$$ \begin{aligned} 3y-7 &= y&& \text{move the $ \color{blue}{ y } $ to the left side and $ \color{blue}{ -7 }$ to the right} \\[1 em]3y-y &= 7&& \text{simplify left side} \\[1 em]2y &= 7&& \text{ divide both sides by $ 2 $ } \\[1 em]y &= \frac{7}{2}&& \\[1 em] \end{aligned} $$
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