14. \(\frac{9}{10}+\frac{2}{15}\)

Общий знаменатель — 30: \(\frac{9}{10}=\frac{27}{30}\), \(\frac{2}{15}=\frac{4}{30}\).

\(\frac{27}{30}+\frac{4}{30}=\frac{31}{30}=1\frac{1}{30}\).

Ответ: \(1\frac{1}{30}\).