5.385 Выполните действия: 1) \(7\frac{6}{22} + 5\frac{5}{22};\) 2) \(6\frac{14}{15} - 3\frac{4}{15};\) 3) \(\frac{22}{36} - \frac{11}{36} + \frac{4}{36};\) 4) \(\frac{12}{75} + \frac{14}{75} - \frac{1}{75}\)

1) \(7\frac{6}{22} + 5\frac{5}{22} = (7+5) + (\frac{6}{22} + \frac{5}{22}) = 12 + \frac{11}{22} = 12 + \frac{1}{2} = 12\frac{1}{2}\)

2) \(6\frac{14}{15} - 3\frac{4}{15} = (6-3) + (\frac{14}{15} - \frac{4}{15}) = 3 + \frac{10}{15} = 3 + \frac{2}{3} = 3\frac{2}{3}\)

3) \(\frac{22}{36} - \frac{11}{36} + \frac{4}{36} = \frac{22-11+4}{36} = \frac{15}{36} = \frac{5}{12}\)

4) \(\frac{12}{75} + \frac{14}{75} - \frac{1}{75} = \frac{12+14-1}{75} = \frac{25}{75} = \frac{1}{3}\)

Ответ: 1) \(12\frac{1}{2}\); 2) \(3\frac{2}{3}\); 3) \(\frac{5}{12}\); 4) \(\frac{1}{3}\)