Question
Add: $\frac{4}{-15}$ and $\frac{-7}{-15}$
✓
Answer
$\begin{aligned} & \frac{4}{-15} \text { and } \frac{-7}{-15}=\frac{-4}{15}+\frac{7}{15} \\ & =\frac{-4+7}{15}=\frac{3}{15}\end{aligned}$
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