Question
$$-3 = \frac{p}{9}$$
Answer
$$ p = -27 $$
Explanation
$$ \begin{aligned} -3 &= \frac{p}{9}&& \text{multiply ALL terms by } \color{blue}{ 9 }. \\[1 em]9\cdot(-3) &= 9 \cdot \frac{p}{9}&& \text{cancel out the denominators} \\[1 em]-27 &= p&& \text{ swap the left and right side of the equation } \\[1 em]p &= -27&& \\[1 em]p &= -27&& \\[1 em] \end{aligned} $$
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