11. 1/3 + 1/2; 5/22 − 2/11; 9/14 − 3/7; 1/6 + 1 1/3; 1/9 + 2 1/3.

Приведём дроби к общему знаменателю:

1. \(\frac{1}{3}+\frac{1}{2}=\frac{2}{6}+\frac{3}{6}=\frac{5}{6}\).
2. \(\frac{5}{22}-\frac{2}{11}=\frac{5}{22}-\frac{4}{22}=\frac{1}{22}\).
3. \(\frac{9}{14}-\frac{3}{7}=\frac{9}{14}-\frac{6}{14}=\frac{3}{14}\).
4. \(\frac{1}{6}+1\frac{1}{3}=\frac{1}{6}+1\frac{2}{6}=1\frac{3}{6}=1\frac{1}{2}\).
5. \(\frac{1}{9}+2\frac{1}{3}=\frac{1}{9}+2\frac{3}{9}=2\frac{4}{9}\).

Ответ: \(\frac{5}{6}; \frac{1}{22}; \frac{3}{14}; 1\frac{1}{2}; 2\frac{4}{9}\).