2. \(\frac{7}{10}+\frac{2}{15}\)

Приводим дроби к знаменателю 30: \(\frac{7}{10}=\frac{21}{30}\), \(\frac{2}{15}=\frac{4}{30}\).

\(\frac{21}{30}+\frac{4}{30}=\frac{25}{30}=\frac{5}{6}\).

Ответ: \(\frac{5}{6}\)