Odpowiedź:
1 i 1/3 * 2/5 = 4/3 * 2/5 = 8/15
4 i 1/2 * 3/4 = 9/2 * 3/4 = 27/8 = 3 i 3/8
5/7 * 2 i 3/4 = 5/7 * 11/4 = 55/28 = 1 i 27/28
2 i 4/5 * 3 i 2/3 = 14/5 * 11/3 = 154/15 = 10 i 4/15
1 i 2/3 * 2 i 1/7 = 5/3 * 15/7 = 75/21 = 3 i 12/21 = 3 i 4/7
3 i 1/4 * 1 i 2/5 = 13/4 * 7/5 = 91/20 = 4 i 11/20
