Odpowiedź:
7 8/9 - ( 1 4/9 + 2 3/9) = 7 8/9 -- 3 7/9 = 4 1/9
3 1/5 +5 3/5 - 2 2/5 = 8 4/5 - 2 2/5 = 6 2/5
11 5/7 - 3 2/7 - 4 3/7 = 8 3/7 - 4 3/7 = 4
4 1/4 - 1 3/4 = 3 5/4 - 1 3/4 = 2 2/4 = 2 1/2
6 - 2/3 = 5 3/3 - 2/3 = 5 1/3
5 3/8 2 5/8 = 4 11/8 - 2 5/8 = 2 6/8 = 2 3/4
3 2/9 -1 5/9= 2 11/9 - 1 5/9 = 1 6/9 = 1 2/3
7 3/14 -3 5/14 = 6 17/14 - 3 5/14 = 3 12/14 = 3 6/7
5 - 5/9 = 4 9/9 - 5/9 = 4 4/9
