Выполни действия 3/8×4/5: 9/10; 6/7: 3/5×1 2/5; 2 2/11 × 1 3/8: 3/4; 11/23×3 2/7: 5 1/2; 3/5×(2 2/3: 3 1/5); 1 1/8×(9 1/3: 1 3/4).

3/8 * 4/5 : 9/10 = 3/10 * 10/9 = 1/3
6/7 : 3/5 * 1 2/5 = 6/7 * 5/3 * 7/5 = 10/7 * 7/5 = 2
2 2/11 * 1 3/8 : 3/4 = 24/11 * 11/8 : 3/4 = 3/1 * 4/3 = 4
11/23 * 3 2/7 : 5 1/2 = 11/23 * 23/7 : 11/2 = 11/7 * 2/11 = 2/7
3/5 * (2 2/3 : 3 1/5) = 3/5 * (8/3 : 16/5) = 3/5 * (8/3 * 5/16) = 3/5 * 5/6 = 1/2
1 1/8 * (9 1/3 : 1 3/4) = 9/8 * (28/3 : 7/4) = 9/8 * (28/3 * 4/7) = 9/8 * 16/3 = 6