Odpowiedź:
zad 1
białe --- 6/10
czarne ---- 4/10
zad 2
3/7 < 4/7
5/9 < 5/8
7/11 > 6/11
8/12 > 8/13
zad 3
8/16 = 1/2
24/36 = 6/9 = 2/3
27/45 = 3/5
zad 4
3 i 1/7 = 22/7
2 i 5/9 = 23/9
7 i 3/8 = 59/8
zad 5
19/3 = 6 i 1/3
38/9 = 4 i 2/9
57/8 = 7 i 1/8
zad 6
7 i 7/8 + 4 i 5/8 = 11 i 12/8 = 12 i 4/8 = 12 i 1/2
8 i 1/9 + 9 i 7/9 = 17 i 8/9
6 i 4/7 + 5 i 6/7 = 11 i 10/7 = 12 i 3/7
4 - 2/9 = 3 i 9/9 - 2/9 = 3 i 7/9
3 - 1 i 1/5 = 2 i 5/5 - 1 i 1/5 = 1 i 4/5
8 i 6/9 - 2 i 3/9 = 6 i 3/9 = 6 i 1/3
6 i 1/8 - 3 i 7/8 = 5 i 9/8 - 3 i 7/8 = 2 i 2/8 = 2 i 1/4
15 i 1/10 - 5 i 7/10 = 14 i 11/10 - 5 i 7/10 = 9 i 4/10 = 9 i 2/5
