8- 3 2/7 = 3•7 +2/7 = 8- 23/7 = 33/7 или если сократить 4целая 5/7 11-20/3 = 13/3 = 4 целая 1/3 5 целая 6/12 - 2 = 66/12-2 = 7/2 или 3 целая 1/2
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5)4 5/7
6)3 6/13
8- 3 2/7 = 3•7 +2/7 = 8- 23/7 = 33/7 или если сократить 4целая 5/7 11-20/3 = 13/3 = 4 целая 1/3 5 целая 6/12 - 2 = 66/12-2 = 7/2 или 3 целая 1/2