(11 целых 5/11-8 целых 21/22): 1 целых 2/3

(11 5/11 - 8 21/22) : 1 2/3 = 1 1/2
1) 11 5/11 - 8 21/22 = 11 10/22 - 8 21/22 = 10 32/22 - 8 21/22 = 2 11/22 = 2 1/2
2) 2 1/2 : 1 2/3 = 5/2 * 3/5 = 1/2 * 3/1 = 3/2 = 1 1/2