Odpowiedź:
2/5 - 1/5 = 1/5
spr 1/5 + 1/5 = 2/5
15/23 - 13/23 = 2/23
spr 2/23 + 13/23 = 15/23
3/7 - 2/7 = 1/7
spr 1/7 + 2/7 = 3/7
1/4 - 1/4 = 0
spr 0 + 1/4 = 1/4
4/5 - 2/5 = 2/5
spr 2/5 + 2/5 = 4/5
10/11 - 4/11 = 6/11
spr 6/11 + 4/11 = 10/11
7/9 - 2/9 = 5/9
spr 5/9 + 2/9 = 7/9
12/33 - 7/33 = 5/23
spr 5/33 + 7/33 = 1`2/33
1 - 7/8 = 8/8 - 7/8 = 1/8
spr 1/8 + 7/8 = 8/8 = 1
1 - 20/23 = 23/23 - 20/23 = 3/23
spr 3/23 + 20/23 = 23/23 = 1
1 - 4/7 = 7/7 - 4/7 = 3/7
spr 3/7 + 4/7 = 7/7 = 1
1 - 3/4 = 4/4 - 3/4 = 1/4
spr 1/4 + 3/4 = 4/4 = 1
1 - 7/10 = 10/10 - 7/10 = 3/10
spr 3/10 + 7/10 = 10/10 = 1
1 - 6/11 = 11/11 - 6/11 = 5/11
spr 5/11 + 6/11 = 11/11 = 1
1 - 5/12 = 12/12 - 5/12 = 7/12
spr 7/12 + 5/12 = 12/12 = 1
1 - 17/33 = 33/33 - 17/33 = 16/33
spr 16/33 + 17/33 = 33/33 = 1