1) 5/12+5/24 amplificam 5/12 cu 2=10/24 apoi adunam 10/24+5/24=15/24 simplificam prin 3=5/8
2) 26/21+13/14 amplificam 26/21 cu 2=52/42 si 13/14 cu 3=39/42
52/42+39/42=91/42 simplificam prin 7=13/6
3) 4/15+3/20 amplificam 4/15 cu 4=16/60 si 3/20 cu 3=9/60
16/60+9/60=25/60 simplificam prin 5=5/12
4) 5/24+1/12+3/8 amplificam 5/24 cu 1=5/24 1/12 cu 2=2/24
3/8 cu 3=9/24 5/24+2/24+9/24=16/24 simplificam cu 8=2/3
5) 7/30-3/20 amplificam: 7/30 cu 2=14/60 3/20 cu 3=9/60
14/60+9/60=25/60 simplificam prin 5=5/12
6) 8/15-9/20 amplificam: 8/15 cu 4=32/60 9/20 cu 3=27/60
32/60+27/60=59/60
7) 8/21-4/35 amplificam: 8/21 cu 5=40/105 4/35 cu 3=12/105
40/105+12/105=52/105
8) 7/6-3/4-1/12 amplificam: 7/6 cu 2=14/12 3/4 cu 3=9/12
14/12-9/12-1/12=4/12 simplificam prin 4=1/3
sper ca te-am ajutat
