Выполните деление 1 : 1/2 1 : 1/5 3 : 1/9 6 : 1/11 3/4 : 9 2/5 : 10

1 : 1/2 = 1 * 2/1 = (1 * 2) / 1 = 2/1 = 2. 

1 : 1/5 = 1 * 5/1 = (1 * 5) / 1 = 5/1 = 5.

3 : 1/9 = 3 * 9/1 = (3 * 9) / 1 = 18/1 = 18.

6 : 1/11 = 6 * 11/1 = (6 * 11) / 1 = 66/1 = 66. 

3/4 : 9 = 3/4 * 1/9 = (3 * 1) / (4 * 9) = 3/36 = 1/2. 

2/5 : 10 = 2/5 * 1/10 = (2 * 1) / (5 * 10) = 2/50 = 1/25.