Ответ №1
А)8/9 - 5/12 = 32/36 - 15/36= 17/36
б)7/15 +7/12 =28/60 + 35/60 = 63/60 =13/60
в)5/21 + 5/28 = 20/84 + 15/84 = 35/84
г)11/42 - 5/28= 22/84-15/84 = 7/84
Ответ №1
А)8/9 - 5/12 = 32/36 - 15/36= 17/36
б)7/15 +7/12 =28/60 + 35/60 = 63/60 =13/60
в)5/21 + 5/28 = 20/84 + 15/84 = 35/84
г)11/42 - 5/28= 22/84-15/84 = 7/84
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