Odpowiedź:
4/5 : 2 = 4/5 * 1/2 = 4/10 = 2/5
2/7 : 3 = 2/7 * 1/3 = 2/21
4/7 : 2 = 4/7 * 1/2 = 4/14 = 2/7
5/9 : 3 = 5/9 * 1/3 = 5/27
1 i 1/2 : 3 = 3/2 * 1/3 = 3/6 = 1/2
2 i 1/4 : 6 = 9/4 * 1/6 = 9/24 = 3/8
4 i 1/5 : 7 = 21/5 * 1/7 = 3/5
2 i 4/7 : 9 = 18/7 * 1/9 = 2/7
20 i 2/3 : 31 = 62/3 * 1/31 = 2/3
10 i 1/5 : 9 = 51/5 * 1/9 = 51/45 = 1 i 6/45
10 i 2/11 : 21 = 110/11 * 1/21 = 110/231
1 i 1/99 : 15 = 100/99 * 1/15 = 20/297
