Ответ:
- а) \(1-\frac{4}{9}=\frac{5}{9}\).
- б) \(8\frac{8}{15}-4\frac{9}{20}=4+\left(\frac{32}{60}-\frac{27}{60}\right)=4\frac{1}{12}\).
- в) \(4-3\frac{3}{4}=\frac{1}{4}\).
- г) \(9\frac{4}{21}-4\frac{11}{14}=4+\left(\frac{8}{42}+1-\frac{33}{42}\right)=4\frac{17}{42}\).
- д) \(7\frac{1}{10}-3\frac{1}{6}=3+\left(\frac{3}{30}+1-\frac{5}{30}\right)=3\frac{14}{15}\).
- е) \(5\frac{5}{33}-4\frac{7}{22}=4+\left(\frac{10}{66}+1-\frac{21}{66}\right)=4\frac{5}{6}\).
