Răspuns :
a) 21/14 =3/2
4/18 =2/9
5/10 =1/2
8/36 =2/9
6/8 =3/4
18/24 =9/12
4/8 =1/2
Perechi de fractii echivalente sunt:5/10 cu 4/8 si 4/18 cu 8/36.
b) 18/27=2/3
12/16=3/4
6/9 =2/3
20/32=10/16=5/8
60/80=3/4
16/28=4/7
Perechi de fractii echivalente sunt:12/16 cu 60/80 si 18/27 cu 6/9.
4/18 =2/9
5/10 =1/2
8/36 =2/9
6/8 =3/4
18/24 =9/12
4/8 =1/2
Perechi de fractii echivalente sunt:5/10 cu 4/8 si 4/18 cu 8/36.
b) 18/27=2/3
12/16=3/4
6/9 =2/3
20/32=10/16=5/8
60/80=3/4
16/28=4/7
Perechi de fractii echivalente sunt:12/16 cu 60/80 si 18/27 cu 6/9.