Вычисли

1. \(\dfrac{2}{13} + \dfrac{7}{13} =\) [ ];
2. \(\dfrac{14}{29} - \dfrac{10}{29} =\) [ ];
3. \(\dfrac{2}{41} + \dfrac{11}{82} =\) [ ];
4. \(\dfrac{5}{19} - \dfrac{2}{57} =\) [ ].

Запиши в ответе несократимую дробь.