Ответ:

  1. (5/14 + 17/42) · 1 6/8 = 16/21 · 7/4 = 1 1/3.
  2. (5 8/9 : 1 17/36 + 1 1/4) · 5/21 = (53/9 : 53/36 + 5/4) · 5/21 = (4 + 5/4) · 5/21 = 1 1/4.
  3. (2 1/4 + 4 5/6) : 3/5 − 3/4 · 3/5 = 85/12 · 5/3 − 9/20 = 425/36 − 9/20 = 11 16/45.
  4. (3 1/4 + 3 5/6) : (5 3/4 − 3 2/3) = 85/12 : 25/12 = 3 2/5.
  5. (6 4/5 − 2 3/4) : (2 16/21 + 3 2/3) = 81/20 : 135/21 = 63/100.
  6. (2 3/8 + 3 7/24) : (4 2/3 − 1 1/8) = 17/3 : 85/24 = 1 3/5.
  7. (1 3/4 + 2 1/3) : (7 1/2 − 1 2/3) = 49/12 : 35/6 = 7/10.
  8. (4/5 + 4/7) · (3 3/8 + 2 11/4) = 48/35 · 65/8 = 11 1/7.
  9. 3,6 = 18/5. Тогда (18/5 − 5/3) : (61/15 − 25/9) = 29/15 : 58/45 = 1 29/58.
  10. 4 1/6 · (1 1/2 − 3/5) + (3/4 + 5/6) · 6 = 25/6 · 9/10 + 19/12 · 6 = 15/4 + 19/2 = 13 1/4.