Пошаговое объяснение:
5/4 - 4/5 = 25/20 - 16/20 = 9/20
5/49 + 3/7 = 5/49 + 21/49 = 26/49
7/36 - 7/48 = 28/144 - 21/144 = 7/144
Пошаговое объяснение:
5/4 - 4/5 = 25/20 - 16/20 = 9/20
5/49 + 3/7 = 5/49 + 21/49 = 26/49
7/36 - 7/48 = 28/144 - 21/144 = 7/144