Вычислите: 8/15*(-1/2)-3/10:(-6/5).

\[\frac{8}{15} \cdot \left( - \frac{1}{2} \right) - \frac{3}{10}\ :\left( - \frac{6}{5} \right) =\]

\[= - \frac{4}{15} + \frac{3}{10} \cdot \frac{5}{6} = - \frac{4^{\backslash 4}}{15} + \frac{1^{\backslash 15}}{4} =\]

\[= \frac{- 16 + 15}{60} = - \frac{1}{60}.\]