Adding Mixed Numbers

Question 1:

5 1 2 + 3 2 7
123 14 = 8 11 14

Question 2:

3 1 6 + 1 5 8
115 24 = 4 19 24

Question 3:

2 3 8 + 4 1 5
263 40 = 6 23 40

Question 4:

1 5 6 + 4 1 7
251 42 = 5 41 42