J.R. S. answered 11/19/18
Ph.D. in Biochemistry--University Professor--Chemistry Tutor
9 1/3 = 28/3
4 1/6 = 25/6
Change 28/3 to get a 6 in denominator: 56/6
Now, both fractions have same denominator so you can add them:
25/6 + 56/6 = 81/6
This can further be reduced to 27/2 by dividing numerator and denominator by 3
So answer would be 27/2 or 13.5