$$\frac{387}{1000}x = 0$$
Answer
$$ x = 0 $$
Explanation
$$ \begin{aligned} \frac{387}{1000}x &= 0&& \text{multiply ALL terms by } \color{blue}{ 1000 }. \\[1 em]1000 \cdot \frac{387}{1000}x &= 1000\cdot0&& \text{cancel out the denominators} \\[1 em]387x &= 0&& \text{ divide both sides by $ 387 $ } \\[1 em]x &= \frac{0}{387}&& \\[1 em]x &= 0&& \\[1 em] \end{aligned} $$
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