Odpowiedź :
6/7
4 15/16
7/13
2 4/9
5/4 + 2/7 = 35/28 + 8/28 = 1 15/28
8/5 + 15/4 = 32/20 + 75/20 = 5 7/20
17/3 - 18/5 = 85/15 - 54/15 = 31/15 = 2 1/15
6 1/8 - 5 6/8 = 5 9/8 - 5 6/8 = 3/8
4 15/16
7/13
2 4/9
5/4 + 2/7 = 35/28 + 8/28 = 1 15/28
8/5 + 15/4 = 32/20 + 75/20 = 5 7/20
17/3 - 18/5 = 85/15 - 54/15 = 31/15 = 2 1/15
6 1/8 - 5 6/8 = 5 9/8 - 5 6/8 = 3/8