4 целых 5\9- 8\9= 3 целых 1\12-1 целая 5\12= 6 целых 3\7- 5 целых 5\7=
4 5/9 - 8/9 = 41/9 - 8/9 = 33/9 = 3 6/9 3 1/12 - 1 5/12 = 37/12 - 17/12 = 20/12 = 1 8/12 = 1 2/3 6 3/7 - 5 5/7 = 45/7 - 40/7 = 5/7