Odpowiedź:
4/12 + 5/6 = 4/12 + 10/12 = 14/12 = 1 i 2/12 = 1 i 1/6
14/15 - 3/5 = 14/15 - 9/15 = 5/15 = 1/3
6/7 + 5/6 = 36/42 + 35/42 = 71/42 = 1 i 29/42
2/3 - 1/5 = 10/15 - 3/15 = 7/15
4/10 + 5/6 = 12/30 + 25/30 = 37/30 = 1 i 7/30
7/9 - 2/5 = 35/45 - 18/45 = 17/45
1/24 + 5/6 = 1/24 + 20/24 = 21/24 = 7/8
4/7 - 1/8 = 32/56 - 7/56 = 25/56
