Решите уравнение: 2/15:x=4/25.

\[\frac{2}{15}\ :x = \frac{4}{25}\]

\[x = \frac{2}{15}\ :\frac{4}{25}\]

\[x = \frac{2}{15} \cdot \frac{25}{4}\]

\[x = \frac{5}{6}.\]