Răspuns:
Salut!
3/5+1/5=4/5
6/13+2/13=8/13
22/15-9/15=13/15
13/21- 11/21=2/21
4/15+2/3=> amplificam a doua fractie cu 5=>
4/15+10/15=14/15
16/93+6/31=> amplificam a doua fractie cu 3=>
16/93+18/93=34/93
7/32-1/16=> amplificam a doua fractie cu 2=>
7/32-2/32=5/32
22/42-5/14=> amplificam a doua fractie cu 3=>
22/42-15/42=7/42
Sper ca te-am ajutat!
O zi buna!
