2/4 и 3/5:2/4 = 5/103/5 = 6/10
1/7 и 2/3:1/7 = 3/212/3 = 14/21
3/7 и 5/11:3/7 = 33/775/11 = 35/77
11/9 и 1/8:11/9 = 88/721/8 = 9/72
7/11 и 5/5:7/11 = 35/555/5 = 55/55
2/4 и 3/5:
2/4 = 5/10
3/5 = 6/10
1/7 и 2/3:
1/7 = 3/21
2/3 = 14/21
3/7 и 5/11:
3/7 = 33/77
5/11 = 35/77
11/9 и 1/8:
11/9 = 88/72
1/8 = 9/72
7/11 и 5/5:
7/11 = 35/55
5/5 = 55/55