6) 5/8 : (-5/24)

$$
\frac{5}{8} : \left(-\frac{5}{24}\right) = \frac{5}{8} \cdot \left(-\frac{24}{5}\right) = -\frac{5 \cdot 24}{8 \cdot 5} = -\frac{24}{8} = -3
$$

Ответ: -3