Odpowiedź:
4 a) 1 i 1/4 = 5/4
b) 2 i 2/3 = 8/3
c) 1 i 5/7 = 12/7
d) 3 i 2/5 = 17/5
5 a) 8/12 = 2/3
3/15 = 1/5
b) 21/24 = 7/8
25/30 = 5/6
c) 2/3 = 6/9
5/7 = 15/21
d) 3/4 = 12/16
6/10 = 18/30
6 a) 9/10 = 0,9
7/100 = 0,07
2 i 73/100 = 2,73
1 i 3/1000 = 1,003
b) 0,3 = 3/10
0,21 = 21/100
1,8 = 1 i 8/10
1,503 = 1 i 503/1000
