Odpowiedź: zad 2
5/6 —> 10/12
14/16 —> 7/8
42/54 —> 7/9
6/7 —> 48/56
Zad 3
a) 2 i 1/9
B) 1 i 15/24 + 2 i 8/24 = 3 i 23/24
C) 4/11
D) 7 i 7/15 - 2 i 5/15 = 5 i 2/15
Zad 4
A) 5/18
B) 40/132 = 10/33
C) 20/400 = 5/100 = 1/25
D) 10/9 x 9/20 = 90/180 = 1/2
Zad 5
A) 15/1 x 16/3 = 240/3 = 80/1 = 80
B) 7/3 x 12/7 = 84/21 = 4
C) 25/4 : 15/1 = 25/4 x 1/15 = 25/60 = 5/12
D) 30/7 : 21/9 = 30/7 x 9/20 = 270/140 = 27/14 = 1 i 13/14
