5 2/3 + 1/4 + 1 4/6

6 19/12 = 7 7/12

Step-by-step explanation:

you get all the fraction to the same common denominator which is 12

the fraction now are going to be 5 8/12 + 3/12+1 8/12

now you could add them easily

5 8/12+1 8/12 = 6 16/12 + 3/12 = 6 19/12 = 7 7/12