5.340 Выполните действие и сократите дробную часть полученного результата: a) \(7\frac{8}{9} - 3\frac{5}{9}\) b) \(5\frac{5}{12} + 2\frac{1}{12}\) v) \(29\frac{11}{21} - 29\frac{5}{21}\) g) \(6\frac{3}{10} + 7\frac{5}{10}\)

a) \(7\frac{8}{9} - 3\frac{5}{9} = (7-3) + (\frac{8}{9} - \frac{5}{9}) = 4 + \frac{3}{9} = 4 + \frac{1}{3} = 4\frac{1}{3}\) б) \(5\frac{5}{12} + 2\frac{1}{12} = (5+2) + (\frac{5}{12} + \frac{1}{12}) = 7 + \frac{6}{12} = 7 + \frac{1}{2} = 7\frac{1}{2}\) в) \(29\frac{11}{21} - 29\frac{5}{21} = (29-29) + (\frac{11}{21} - \frac{5}{21}) = 0 + \frac{6}{21} = \frac{2}{7}\) г) \(6\frac{3}{10} + 7\frac{5}{10} = (6+7) + (\frac{3}{10} + \frac{5}{10}) = 13 + \frac{8}{10} = 13 + \frac{4}{5} = 13\frac{4}{5}\)