1/4+1/2=1/4+2/4=3/4<1
3/11+9/22=6/22+9/22=15/22<1
2/15+13/45=6/45+13/45=19/45<1
6/18+12/18=18/18=1=1
11/19+8/38=22/38+8/38=30/38=15/19<1
3/8+5/9=27/72+40/72=67/72<1
1/4+1/2=1/4+2/4=3/4<1
3/11+9/22=6/22+9/22=15/22<1
2/15+13/45=6/45+13/45=19/45<1
6/18+12/18=18/18=1=1
11/19+8/38=22/38+8/38=30/38=15/19<1
3/8+5/9=27/72+40/72=67/72<1