Вычислите: 2/5+1/3-7/30.

\[\frac{2^{\backslash 6}}{5} + \frac{1^{\backslash 10}}{3} - \frac{7}{30} = \frac{12 + 10 - 7}{30} =\]

\[= \frac{15}{30} = \frac{1}{2}\]