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
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