Subtracting Fractions

Question 1:

5 6 - 1 6
4 6 = 2 3

Question 2:

2 4 - 1 4
1 4

Question 3:

2 3 - 1 3
1 3

Question 4:

4 10 - 1 3
2 30 = 1 15

Question 5:

2 4 - 1 3
2 12 = 1 6

Question 6:

5 6 - 4 8
8 24 = 1 3