Замените дробями со знаменателем 36: 1/2; 2/3; 5/6; 3/4; 4/9; 7/9; 5/18; 7/18.

1/2 = 18/18 * 1/2 = 18/36,

2/3 = 12/12 * 2/3 = 24/36,

5/6 = 6/6 * 5/6 = 30/36,

3/4 = 9/9 * 3/4 = 27/36,

5/9 = 4/4 * 5/9 = 20/36,

7/9 = 4/4 * 7/9 = 28/36,

5/18 = 2/2 * 5/18 = 10/36,

7/18 = 2/2 * 7/18 = 14/36