Ответ:
а) 1/8 + 5/8 = 6/8
б) 5/9 + 3/9 = 8/9
в) 13/21 + 4/21 = 17/21
г)8/27 + 15/27 + 13/27 = 36/27 = 1 целая 9/27
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Ответ:
а) 1/8 + 5/8 = 6/8
б) 5/9 + 3/9 = 8/9
в) 13/21 + 4/21 = 17/21
г)8/27 + 15/27 + 13/27 = 36/27 = 1 целая 9/27