(2 1/2+1 1/3)÷1/6-5 3/7
(2 1/2 + 1 1/3) : 1/6 - 5 3/7 = 17 4/7 1) 2 1/2 + 1 1/3 = 2 3/6 + 1 2/6 = 3 5/6 = 23/6 2) 23/6 : 1/6 = 23/6 * 6/1 = 23 3) 23 - 5 3/7 = 22 7/7 - 5 3/7 = 17 целых 4/7