Subtracting Mixed Numbers

Question 1:

4 1 3 - 1 7 8
59 24 = 2 11 24

Question 2:

5 5 9 - 1 2 3
35 9 = 3 8 9

Question 3:

2 3 4 - 1 3 8
11 8 = 1 3 8

Question 4:

1 3 4 - 1 3 10
9 20