Question
$$\frac{x}{x+15} = 0\cdot9$$
Answer
$$ x = 0 $$
Explanation
$$ \begin{aligned} \frac{x}{x+15} &= 0\cdot9&& \text{multiply ALL terms by } \color{blue}{ x+15 }. \\[1 em](x+15)\frac{x}{x+15} &= (x+15)\cdot0\cdot9&& \text{cancel out the denominators} \\[1 em]x &= 0&& \text{ divide both sides by $ 1 $ } \\[1 em]x &= \frac{0}{1}&& \\[1 em]x &= 0&& \\[1 em] \end{aligned} $$
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