Subtracting Mixed Numbers

Question 1:

5 1 6 - 2 7 10
74 30 = 2 14 30 = 2 7 15

Question 2:

3 1 2 - 2 7 9
13 18

Question 3:

4 6 7 - 1 1 2
47 14 = 3 5 14

Question 4:

2 1 8 - 1 1 2
5 8