б) 2 1/2 = (22 + 1) / 2 = 5/1 1/3 = (13 + 1) / 3 = 4/6 1/6 = (66 + 1) / 6 = 37/3 4/9 = (39 + 4) / 9 = 31/7 3/11 = (711 + 3) / 11 = 80/15 5/12 = (512 + 5) / 12 = 65/12
б) 2 1/2 = (22 + 1) / 2 = 5/
1 1/3 = (13 + 1) / 3 = 4/
6 1/6 = (66 + 1) / 6 = 37/
3 4/9 = (39 + 4) / 9 = 31/
7 3/11 = (711 + 3) / 11 = 80/1
5 5/12 = (512 + 5) / 12 = 65/12