Zad.2
5/2 • 4 = 5/2 • 4/1 = 5/1 • 2/1 = 10/1 = 10
5/2 • 2 = 5/2 • 2/1 = 5/1 • 1/1= 5/1 = 5
5/2 • 4/3 = 5/1 • 2/3 = 10/3 = 3 1/3
5/2 : 1/4 = 5/2 • 4 = 10
5/2 : 1/2 = 5/2 • 2/1 = 5/1 • 1/1 = 5
5/2 : 3/4 = 5/2 • 4/3 = 5/1 • 2/3 = 3 1/3
Zad.3
4/7 : 3/5 = 4/7 • 5/3 = 20/21
1/7 : 2/5 = 1/7 • 5/2 = 5/14
2/9 : 1/4 = 2/9 • 4/1 = 8/9
6 : 1/2 = 6/1 • 2/1 = = 12/1 = 12
5 : 2/3 = 5/1 • 3/2 = 15/2= 7 1/2
12 : 7/4 = 12/1 : 7/4 = 12/1 • 4/7 = 48/7 = 6 6/7