Question
$$\frac{12}{15}f = -18$$
Answer
$$ f = -\dfrac{45}{2} $$
Explanation
$$ \begin{aligned} \frac{12}{15}f &= -18&& \text{multiply ALL terms by } \color{blue}{ 15 }. \\[1 em]15 \cdot \frac{12}{15}f &= 15\cdot(-18)&& \text{cancel out the denominators} \\[1 em]12f &= -270&& \text{ divide both sides by $ 12 $ } \\[1 em]f &= -\frac{270}{12}&& \\[1 em]f &= -\frac{45}{2}&& \\[1 em] \end{aligned} $$
This page was created using
Equations Solver