2. Найдите значение выражения: а) \(3-1\frac{3}{5}\); б) \(1\frac{3}{10}+\frac{1}{4}\); в) \(2\frac{19}{20}+1\frac{1}{12}\); г) \(4\frac{1}{6}-1\frac{5}{9}\).

а) \(3-1\frac{3}{5}=3-\frac{8}{5}=\frac{15}{5}-\frac{8}{5}=\frac{7}{5}=1\frac{2}{5}\).

б) \(1\frac{3}{10}+\frac{1}{4}=1+\frac{6}{20}+\frac{5}{20}=1\frac{11}{20}\).

в) \(2\frac{19}{20}+1\frac{1}{12}=3+\frac{57}{60}+\frac{5}{60}=3+\frac{62}{60}=4\frac{1}{30}\).

г) \(4\frac{1}{6}-1\frac{5}{9}=3+\frac{1}{6}-\frac{5}{9}=3+\frac{3}{18}-\frac{10}{18}=2\frac{11}{18}\).

Ответ: а) \(1\frac{2}{5}\); б) \(1\frac{11}{20}\); в) \(4\frac{1}{30}\); г) \(2\frac{11}{18}\).