Выполнить вычитание:5 2/3-1/6; 10 8/9-2/3

5 2/3-1/6=5 4/6-1/6=5 3/6= 5 1/2 10 8/9-2/3=10 8/9-6/9= 10 2/9

5 2/3 - 1/6 = 17/3 - 1/6 =34/6 - 1/6 = 33/6 = 11/2 = 5,5 10 8/9 - 2/3 = 98/9 - 2/3 = 98/9 - 6/9 = 92/9