Пошаговое объяснение:
5/9 - 9/14 = 70/126 - 81/126 = -11/126
4 7/15 - 2 11/20 = 4 28/60 - 2 33/60 = 3 88/60 - 2 33/60 = 1 55/60 = 1 11/12
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Пошаговое объяснение:
5/9 - 9/14 = 70/126 - 81/126 = -11/126
4 7/15 - 2 11/20 = 4 28/60 - 2 33/60 = 3 88/60 - 2 33/60 = 1 55/60 = 1 11/12