2.210 Найдите разность: a) $$1 - \frac{4}{5}$$; б) $$2 - \frac{3}{7}$$; в) $$7 - \frac{4}{13}$$; г) $$6 - 1\frac{5}{9}$$; д) $$9 - 3\frac{4}{7}$$; e) $$5 - 4\frac{2}{11}$$. 2.211 Выполните вычитание: a) $$5\frac{7}{15} - \frac{3}{20}$$; б) $$4\frac{7}{12} - \frac{2}{9}$$; в) $$6\frac{5}{7} - \frac{3}{14}$$; г) $$7\frac{5}{7} - 4\frac{2}{3}$$; д) $$3\frac{2}{3} - 3\frac{4}{11}$$; e) $$7\frac{5}{12} - 3\frac{2}{9}$$. 2.212 Выполните действие: a) $$1\frac{4}{15} - \frac{17}{20}$$; б) $$7\frac{4}{15} - \frac{7}{9}$$; в) $$2\frac{5}{12} - \frac{7}{8}$$; г) $$11\frac{1}{2} - 3\frac{11}{18}$$; д) $$9\frac{2}{11} - 7\frac{5}{9}$$; e) $$2\frac{6}{25} - 1\frac{7}{10}$$; ж) $$3\frac{1}{2} - 2\frac{3}{4}$$; з) $$12\frac{5}{12} - 9\frac{13}{18}$$.

Выполним указанные действия: 2.210 Найдите разность: a) $$1 - \frac{4}{5} = \frac{5}{5} - \frac{4}{5} = \frac{1}{5}$$ б) $$2 - \frac{3}{7} = \frac{14}{7} - \frac{3}{7} = \frac{11}{7} = 1\frac{4}{7}$$ в) $$7 - \frac{4}{13} = \frac{91}{13} - \frac{4}{13} = \frac{87}{13} = 6\frac{9}{13}$$ г) $$6 - 1\frac{5}{9} = 6 - \frac{14}{9} = \frac{54}{9} - \frac{14}{9} = \frac{40}{9} = 4\frac{4}{9}$$ д) $$9 - 3\frac{4}{7} = 9 - \frac{25}{7} = \frac{63}{7} - \frac{25}{7} = \frac{38}{7} = 5\frac{3}{7}$$ e) $$5 - 4\frac{2}{11} = 5 - \frac{46}{11} = \frac{55}{11} - \frac{46}{11} = \frac{9}{11}$$ 2.211 Выполните вычитание: a) $$5\frac{7}{15} - \frac{3}{20} = 5\frac{28}{60} - \frac{9}{60} = 5\frac{19}{60}$$ б) $$4\frac{7}{12} - \frac{2}{9} = 4\frac{21}{36} - \frac{8}{36} = 4\frac{13}{36}$$ в) $$6\frac{5}{7} - \frac{3}{14} = 6\frac{10}{14} - \frac{3}{14} = 6\frac{7}{14} = 6\frac{1}{2}$$ г) $$7\frac{5}{7} - 4\frac{2}{3} = 7\frac{15}{21} - 4\frac{14}{21} = 3\frac{1}{21}$$ д) $$3\frac{2}{3} - 3\frac{4}{11} = \frac{11}{3} - \frac{37}{11} = \frac{121}{33} - \frac{111}{33} = \frac{10}{33}$$ e) $$7\frac{5}{12} - 3\frac{2}{9} = 7\frac{15}{36} - 3\frac{8}{36} = 4\frac{7}{36}$$ 2.212 Выполните действие: a) $$1\frac{4}{15} - \frac{17}{20} = 1\frac{16}{60} - \frac{51}{60} = \frac{76}{60} - \frac{51}{60} = \frac{25}{60} = \frac{5}{12}$$ б) $$7\frac{4}{15} - \frac{7}{9} = 7\frac{12}{45} - \frac{35}{45} = 6\frac{57}{45} - \frac{35}{45} = 6\frac{22}{45}$$ в) $$2\frac{5}{12} - \frac{7}{8} = 2\frac{10}{24} - \frac{21}{24} = 1\frac{34}{24} - \frac{21}{24} = 1\frac{13}{24}$$ г) $$11\frac{1}{2} - 3\frac{11}{18} = 11\frac{9}{18} - 3\frac{11}{18} = 10\frac{27}{18} - 3\frac{11}{18} = 7\frac{16}{18} = 7\frac{8}{9}$$ д) $$9\frac{2}{11} - 7\frac{5}{9} = 9\frac{18}{99} - 7\frac{55}{99} = 8\frac{117}{99} - 7\frac{55}{99} = 1\frac{62}{99}$$ e) $$2\frac{6}{25} - 1\frac{7}{10} = 2\frac{12}{50} - 1\frac{35}{50} = 1\frac{62}{50} - 1\frac{35}{50} = \frac{27}{50}$$ ж) $$3\frac{1}{2} - 2\frac{3}{4} = 3\frac{2}{4} - 2\frac{3}{4} = 2\frac{6}{4} - 2\frac{3}{4} = \frac{3}{4}$$ з) $$12\frac{5}{12} - 9\frac{13}{18} = 12\frac{15}{36} - 9\frac{26}{36} = 11\frac{51}{36} - 9\frac{26}{36} = 2\frac{25}{36}$$