Question
$$4 = \frac{v}{23}$$
Answer
$$ v = 92 $$
Explanation
$$ \begin{aligned} 4 &= \frac{v}{23}&& \text{multiply ALL terms by } \color{blue}{ 23 }. \\[1 em]23\cdot4 &= 23 \cdot \frac{v}{23}&& \text{cancel out the denominators} \\[1 em]92 &= v&& \text{ swap the left and right side of the equation } \\[1 em]v &= 92&& \\[1 em]v &= 92&& \\[1 em] \end{aligned} $$
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