Ответ:
а) \(1\frac{4}{9}+2\frac{5}{18}=3+\frac{8}{18}+\frac{5}{18}=3\frac{13}{18}\).
б) \(3\frac{5}{24}-1\frac{7}{36}=2+\frac{15}{72}-\frac{14}{72}=2\frac{1}{72}\).
в) \(2\frac{7}{30}+3\frac{9}{20}-4\frac{59}{60}=1+\frac{14}{60}+\frac{27}{60}-\frac{59}{60}=1-\frac{18}{60}=\frac{7}{10}\).
Ответ: а) \(3\frac{13}{18}\); б) \(2\frac{1}{72}\); в) \(\frac{7}{10}\).
