Adding Fractions

Question 1:

1 3 + 2 3
3 3 = 1

Question 2:

7 9 + 1 9
8 9

Question 3:

2 6 + 2 6
4 6 = 2 3

Question 4:

4 8 + 1 12
14 24 = 7 12

Question 5:

2 4 + 1 3
10 12 = 5 6

Question 6:

2 6 + 11 20
53 60