вычисление дробей :1 (целая)5/9-8/9;1 целая 1/12 -5/12 ;8 целых 3/7- 5 целых 5/7 ;4целых 1/8-1 целая 5/8 1 целая 1/2-2/3 ;1 целая 1/8-1/4 ;2 целых 3/10-4/15 ;1 целая 1/4-1/3 ; 1 цела я 2/3-5/6 ; 3 целых1/8-1/6 2 целых 1/3-1 целая 1/2; 7 целых 1/9-4 целых 1/3;6 целых 1/4-3 целых 2/5 ;
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2) 1 1/12 - 5/12 = 13/12 - 5/12 = 8/12 = 2/3
3) 8 3/7 - 5 5/7 = 7 10/7 - 5 5/7 = 2 5/7
4) 4 1/8 - 1 5/8 = 3 9/8 - 1 5/8 = 2 4/8 = 2 1/2 = 2,5
5) 1 1/2 - 2/3 = 1 3/6 - 4/6 = 9/6 - 4/6 = 5/6
6) 1 1/8 - 1/4 = 1 1/8 - 2/8 = 9/8 - 2/8 = 7/8
7) 2 3/10 - 4/15 = 2 9/30 - 8/30 = 2 1/30
8) 1 1/4 - 1/3 = 1 3/12 - 4/12 = 15/12 - 4/12 = 11/12
9) 1 2/3 - 5/6 = 1 4/6 - 5/6 = 10/6 - 5/6 = 5/6
10) 3 1/8 - 1/6 = 3 3/24 - 4/24 = 2 27/24 - 4/24 = 2 23/24
11) 2 1/3 - 1 1/2 = 2 2/6 - 1 3/6 = 1 8/6 - 1 3/6 = 5/6
12) 7 1/9 - 4 1/3 = 7 1/9 - 4 3/9 = 6 10/9 - 4 3/9 = 2 7/9
13) 6 1/4 - 3 2/5 = 6 5/20 - 3 8/20 = 5 25/20 - 3 8/20 = 2 17/20