2. \(\frac{2}{5}+\frac{1}{3}=\)

Общий знаменатель дробей — 15: \(\frac{2}{5}=\frac{6}{15}\), \(\frac{1}{3}=\frac{5}{15}\).

\(\frac{6}{15}+\frac{5}{15}=\frac{11}{15}\).

Ответ: \(\frac{11}{15}\).