Решите: x-7/8=11/12 19/20-x=9/12 7-y=3 целых 1/3

x-7/8=11/12 х=11/12+7/8 х=22/24+21/24 х=43/24 х=1 19/2419/20-x=9/12 х=19/20-9/12 х=57/60-45/60 х=12/60 х=1/57-y=3 целых 1/3 у=7 -3 1/3 у=7/1 -10/3 у=21/3-10/3 у=11/3 у=3 2/3