1) 3/11+1/22=amplifici fractia 3/11 cu 2=6/22+1/22=7/22
2) 7/4+1/2=7/4+1/2 0 amplifici cu 2=2/4=7/4+2/4=9/4
3) 1/3+1/5=1/3 o amplifici cu 5=5/15 si 1/5 o amplifici cu 3=3/15=5/15+3/15=8/15
4) 2/5+7/3=2/5 amplifici cu 3=6/15 si 7/3 o amplifici cu 5=35/15 =6/15+35/15=41/15
5) 1/3+5/6+3/4+7/24= aducem toate fractiile la numitorul, 1/3=8/24; 5/6=20/24; 3/4=18/24; 7/24 ramine asa, acum le adunam pe toate;
8/24+20/24+18/24+7/24= 53/24
6) 1/6+2/3=1/6+4/6=5/6
7) 3/8+5/16=6/16+5/16=11/16
