Ответ:

  1. Образец: приводим дроби к общему знаменателю: \(1\frac{3}{4}-\frac{5}{8}=1\frac{6}{8}-\frac{5}{8}=1\frac{1}{8}\).
  2. \(2\frac{6}{7}-\frac{3}{14}=2\frac{12}{14}-\frac{3}{14}=2\frac{9}{14}\).
  3. \(5\frac{8}{9}-\frac{5}{18}=5\frac{16}{18}-\frac{5}{18}=5\frac{11}{18}\).
  4. \(4\frac{11}{15}-\frac{3}{5}=4\frac{11}{15}-\frac{9}{15}=4\frac{2}{15}\).
  5. \(3\frac{7}{12}-\frac{1}{4}=3\frac{7}{12}-\frac{3}{12}=3\frac{1}{3}\).
  6. \(3\frac{23}{25}-\frac{4}{5}=3\frac{23}{25}-\frac{20}{25}=3\frac{3}{25}\).
  7. \(4\frac{16}{21}-1\frac{5}{7}=3+\frac{16}{21}-\frac{15}{21}=3\frac{1}{21}\).
  8. \(6\frac{5}{12}-1\frac{7}{24}=6\frac{10}{24}-1\frac{7}{24}=5\frac{3}{24}=5\frac{1}{8}\).
  9. \(3\frac{5}{6}-2\frac{2}{3}=1+\frac{5}{6}-\frac{4}{6}=1\frac{1}{6}\).
  10. \(2\frac{7}{8}-2\frac{7}{16}=\frac{14}{16}-\frac{7}{16}=\frac{7}{16}\).