Respuesta :

Number 7:   11/12-9/10 = 110/120-108/120=2/120= 1/60

number 8:     5/18-1/3=15/54-5/54=10/54 =5/27

Number 7: 11/12-9/10 = 110/120-108/120=2/120= 1/60

number 8: 5/18-1/3=15/54-5/54=10/54 =5/27