1) 2 1/6 : (8 3/4 - 5 1/2) = 2/3
1) 8 3/4 - 5 1/2 = 8 3/4 - 5 2/4 = 3 1/4
2) 2 1/6 : 3 1/4 = 13/6 : 13/4 = 13/6 * 4/13 = 4/6 = 2/3
2) 3 17/20 : (3 2/5 + 1 11/15) = 3/4
1) 3 2/5 + 1 11/15 = 3 6/15 + 1 11/15 = 4 17/15 = 5 2/15
2) 3 17/20 : 5 2/15 = 77/20 : 77/15 = 77/20 * 15/77 = 15/20 = 3/4
3) (4 3/5 - 2 1/5) : 1 1/10 = 2 2/11
1) 4 3/5 - 2 1/5 = 2 2/5
2) 2 2/5 : 1 1/10 = 12/5 : 11/10 = 12/5 * 10/11 = 12/1 * 2/11 = 24/11 =
= 2 2/11