Odpowiedź:
Zadanie 1
3/4 = 9/12
4/7 = 12/21
2/5 = 6/15
1/2 = 3/6
Zadanie 2
3 : 7 = 3/7
4 : 12 = 4/12
4 : 9 = 4/9
8 : 3 = 8/3
Zadanie 3
15/2 = 7 i 1/2
25/7 = 3 i 4/7
17/4 = 4 i 1/4
9/4 = 2 i 1/4
Zadanie 4
6/8 - 4/8 = 2/8 = 1/2
2 - 1/3 = 1 i 3/3 - 1/3 = 1 i 2/3
5 i 4/7 - 3/7 = 5 i 1/7