Ответ:

  1. \(7\frac{8}{11}-2=5\frac{8}{11}\).
  2. \(10\frac{2}{5}-7=3\frac{2}{5}\).
  3. \(12\frac{11}{17}-8=4\frac{11}{17}\).
  4. \(10\frac{3}{7}-6=4\frac{3}{7}\).
  5. \(4\frac{5}{7}-3\frac{3}{7}=1\frac{2}{7}\).
  6. \(11\frac{6}{13}-9\frac{4}{13}=2\frac{2}{13}\).
  7. \(12\frac{15}{19}-8\frac{13}{19}=4\frac{2}{19}\).
  8. \(7\frac{14}{17}-6\frac{5}{17}=1\frac{9}{17}\).