Odpowiedź:
3 * 2/7 = 6/7
4/15 * 2 = 8/15
2 * 11/31 = 22/31
5 * 1/8 = 5/8
3/10 * 3 = 9/10
2/13 * 4 = 8/13
3/19 * 5 = 15/19
2 * 7/31 = 14/31
3 * 4/7 = 12/7 = 1 i 5/7
11/15 * 2 = 22/15 = 1 i 7/15
7 * 10/33 = 70/33 = 2 i 4/33
11 * 1/8 = 11/8 = 1 i 3/8
5/8 * 3 = 15/8 = 1 i 7/8
9/20 * 9 = 81/20 = 4 i 1/20
5 * 6/13 = 30/13 = 2 i 4/13
4 * 3/5 = 12/5 = 2 i 2/5
