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
