Converting Between Improper Fractions and Mixed Numbers

Question 1:

79 15
5 4 15

Question 2:

21 20
1 1 20

Question 3:

12 7
1 5 7

Question 4:

5 1 2
11 2

Question 5:

5 3 5
28 5

Question 6:

4 9 11
53 11