Adding Fractions

Question 1:

2 3 + 1 3
3 3 = 1

Question 2:

2 8 + 3 8
5 8

Question 3:

2 10 + 1 10
3 10

Question 4:

2 20 + 6 8
34 40 = 17 20

Question 5:

1 2 + 6 15
27 30 = 9 10

Question 6:

1 3 + 1 4
7 12