2 целых 3/ 16 + 1 7/24 + 3 1/12

1) 2 3/16 + 1 7/24=3+ (3/16+7/24)=3+ (9/48+14/48)=3+23/38=3 23/48
2) 3 23/48 + 3 1/12= 6+(23/48+1/12)=6+ (23/48+4/48)=6 27/48=6 9/16