44. Выполните действия.

Выполним действия для задания 44: 1) $25 \frac{5}{11} + 3 \frac{6}{7} = (25 + 3) + (\frac{5}{11} + \frac{6}{7}) = 28 + (\frac{35}{77} + \frac{66}{77}) = 28 + \frac{101}{77} = 28 + 1 \frac{24}{77} = 29 \frac{24}{77}$ 2) $14 \frac{7}{9} - 1 \frac{1}{6} = (14 - 1) + (\frac{7}{9} - \frac{1}{6}) = 13 + (\frac{14}{18} - \frac{3}{18}) = 13 + \frac{11}{18} = 13 \frac{11}{18}$ 3) $2 \frac{9}{20} - (\frac{1}{4} + 1 \frac{1}{5}) = 2 \frac{9}{20} - (\frac{5}{20} + 1 \frac{4}{20}) = 2 \frac{9}{20} - 1 \frac{9}{20} = 1$ 4) $\frac{5}{6} + (6 \frac{5}{9} - \frac{1}{4}) = \frac{5}{6} + (\frac{20}{36} - \frac{9}{36}) = \frac{30}{36} + 5 \frac{31}{36} = 5 \frac{61}{36} = 6 \frac{25}{36}$