1) 3/12 + 25/30 =1/4+5/6=3/12+10/12=13/12=1 1/12
2) 30/54+22/30 =5/9+11/15=25/45+33/45=58/45=
1 13/45
3) 12/27+14/21=4/9+2/3=4/9+6/9=10/9=
1 1/9
1) 3/12 + 25/30 =1/4+5/6=3/12+10/12=13/12=1 1/12
2) 30/54+22/30 =5/9+11/15=25/45+33/45=58/45=
1 13/45
3) 12/27+14/21=4/9+2/3=4/9+6/9=10/9=
1 1/9