Răspuns:
3. numitor comun 30, 3/30,22/30
60, 25/60,27/60
54, 21/54,16/54
98, 21/98, 10/98
4. 1/2,2/3 nc 6, 3/6,4/6
1/4,2/5, nc 20, 5/20, 8/20
1/3,1/4 nc12,4/12,3/12
4/5,4/7 nc 35,28/35,20/35
5. 7/10=21/30
2/3=20/30
4/5=24/30
deci 24/30 e cea mai mare fracție, echipa albastră
