Odpowiedź:
B) 1 - 3/7 = 7/7 - 3/7 = 4/7
1 - 5/14 = 14/14 - 5/14 = 9/14
1 - 7/20 = 20/20 - 7/20 = 13/20
1 - 5/19 = 19/19 - 5/19 = 14/19
1 - 1/24 = 24/24 - 1/24 = 23/24
1 - 7/13 = 13/13 - 7/13 = 6/13
1 - 14/27 = 27/27 - 14/27 = 13/27
1 - 9/19 = 19/19 - 9/19 = 10/19
1 - 4/15 = 15/15 - 4/15 = 11/15
1 - 17/20 = 20/20 - 17/20 = 3 /20
1 - 14/37 = 3737 - 14/37 = 23/27
1 - 2750 = 50/50 - 27/50 = 23/50
C
3 4/7 - 2 3/7 = 1 1/7
5 9/11 - 3 5/11 = 2 4/11
10 15/17 - 4 9/17 = 6 6/17
17 11/14 - 9 6/14 = 8 5/14
15 7/12 - 9 2/12 = 6 5/12
9 14/27 - 4 10/27 = 5 4/27
7 7/9 - 4 2/9 = 3 5/9
11 10/11 - 7 4/11 - 4 6/11
12 4/19- 8 3/19 - 4 1/19
20 7/13 - 15 4/13 = 5 5/13
5 23/31 - 3 15/31 = 2 8/31
16 17/23 - 7 8/23 = 9 9/23
D
4 - 7/15 = 3 15/15 - 715 = 3 8/15
6 - 5/12 = 5 12/12 - 5/12 = 5 7/12
2 - 4/7 = 1 7/7 - 4/7 = 1 3/7
7 - 2/5 = 6 5/5 - 2/5 = 6 2/5
8 - 9/11 - 7 11=11 - 9/11 = 7 2/11
9 - 7/10 = 8 10/10 - 7/10 = 8 3/10
