Question
$$\frac{6}{7}y = 3$$
Answer
$$ y = \dfrac{7}{2} $$
Explanation
$$ \begin{aligned} \frac{6}{7}y &= 3&& \text{multiply ALL terms by } \color{blue}{ 7 }. \\[1 em]7 \cdot \frac{6}{7}y &= 7\cdot3&& \text{cancel out the denominators} \\[1 em]6y &= 21&& \text{ divide both sides by $ 6 $ } \\[1 em]y &= \frac{21}{6}&& \\[1 em]y &= \frac{7}{2}&& \\[1 em] \end{aligned} $$
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