Ответ:

  1. а) 5 2/15 + 3 5/12 = 8 + 8/60 + 25/60 = 8 33/60 = 8 11/20.
  2. б) 9 4/21 − 4 11/14 = 5 + 8/42 − 33/42 = 4 17/42.
  3. в) 5 18/35 + 2 13/14 = 7 + 36/70 + 65/70 = 8 31/70.
  4. г) 5 5/33 − 4 7/22 = 1 + 10/66 − 21/66 = 5/6.