б) 2 1/2 = (22 + 1) / 2 = 5/21 1/3 = (13 + 1) / 3 = 4/36 1/6 = (66 + 1) / 6 = 37/63 4/9 = (39 + 4) / 9 = 31/97 3/11 = (711 + 3) / 11 = 80/115 5/12 = (512 + 5) / 12 = 65/12
б) 2 1/2 = (22 + 1) / 2 = 5/2
1 1/3 = (13 + 1) / 3 = 4/3
6 1/6 = (66 + 1) / 6 = 37/6
3 4/9 = (39 + 4) / 9 = 31/9
7 3/11 = (711 + 3) / 11 = 80/11
5 5/12 = (512 + 5) / 12 = 65/12