Сравнить:
5/16 и 7/20; Общ.знамен. 80
25/80 и 28/80
25/80 < 28/80
5/16 < 7/20
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39/38 и 56/57
39/38 = 1целая 1/38
56.57 = 0целых 56./57
1 1/38 > 0целых 56/57
39/38 > 56/57
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87/85 и 92/93
87/85 = 1целая 2/85
92/93 = 0целых 92/93
1целая 2/85 > 0 целых 92/93
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Вычислить:
11/16 + 7/24 = 33/48 + 14/48 = 47/48
11/20 - 2/15 = 33/60 - 8/60 = 25/60
11/18 - 5/24 + 25/72 = 44/72 - 15/72 + 25/72 = 54/72= 27/36 = 9/12 = 3/4
87/85 > 92/93