1)15/19+27/38=30/38+27/38=57/38
2)9/16+19/24=27/48+38/48=65/48
3)11/42-5/28=44/168-30/168=14/168
4)13/60-7/40=26/120-21/120=5/120=1/24
1)15/19+27/38=30/38+27/38=57/38
2)9/16+19/24=27/48+38/48=65/48
3)11/42-5/28=44/168-30/168=14/168
4)13/60-7/40=26/120-21/120=5/120=1/24