a) $$1-\frac{5}{8} = \frac{8}{8} - \frac{5}{8} = \frac{3}{8}$$
б) $$3\frac{7}{10} - 1\frac{15}{15} = 3\frac{7}{10} - 2 = 1\frac{7}{10} = 1.7$$
в) $$7\frac{5}{18} - 5\frac{17}{12} = 7\frac{10}{36} - 5\frac{51}{36} = 6\frac{46}{36} - 5\frac{51}{36} = 1\frac{46}{36} - \frac{51}{36} = \frac{82}{36} - \frac{51}{36} = \frac{31}{36}$$
г) $$10 - 1\frac{5}{9} = 9\frac{9}{9} - 1\frac{5}{9} = 8\frac{4}{9}$$
д) $$9\frac{5}{6} - 2\frac{3}{4} = 9\frac{10}{12} - 2\frac{9}{12} = 7\frac{1}{12}$$
е) $$5\frac{3}{24} - 1\frac{1}{21} = 5\frac{21}{168} - 1\frac{8}{168} = 4\frac{13}{168}$$
Ответ: a) $$\frac{3}{8}$$; б) $$1.7$$; в) $$\frac{31}{36}$$; г) $$8\frac{4}{9}$$; д) $$7\frac{1}{12}$$; е) $$4\frac{13}{168}$$