2 15/100 + 12/100+ 1 3/8 =
1) 2 15/100 + 12/2*100+15/100+12/100=215/100+12/100=215+12/100=227/100=2 27/100
2 15/100 + 12/100+ 1 3/8 =
1) 2 15/100 + 12/2*100+15/100+12/100=215/100+12/100=215+12/100=227/100=2 27/100