Пошаговое объяснение:
9/11 - 3/7 = 63/77 - 33/77 = 30/77
11/16 - 9/32 = 22/32 - 9/32 = 13/32
14/15 - 9/10 = 28/30 - 27/30 = 1/30
9/11 - 3/7 = 30/77
11/16 - 9/32 = 13/32
14/15 - 9/10 = 1/30
