Respuesta :

Answer: 3 6/4 or 18/4

Step-by-step explanation:

1 3/4+2 3/4= 1+2 and 3/4+3/4

1+2=3

3/4+3/4= (3+3= 6 )6/4

3+6/4= 3 6/4 or 18/4

STUDENTS MISTAKE:

they added the denominators