Odpowiedź:
4.
a)
2/5 = 10/25 = 4/10 etc
1/3 = 2/6 = 4/12 = 6/18 = 8/24 = .......
b)
4/7 = 8/14 = 12/21 = 16/28 = 20/35 = ......
3/8 = 6/16 = 9/24 = 12/32 .........
c)
2/5 = 4/10 = 6/15 = .....
3/4 = 6/8 = 9/12 = 12/16 = 15/20 = ......
d)
3/4 = 27/36
2/7 = 4/14 = 6/21 = 8/28 = 10/35 = 12/42 = ......
5.
a)
1/2 5/10 6/12 13/26 25/50
b)
2/3 6/9 8/12 14/21 60/90
Szczegółowe wyjaśnienie:
