Factorise Fully

Question 1:

3g−6
3 g−2

Question 2:

15q−6
3 5q−2

Question 3:

63n−54
9 7n−6

Question 4:

9y2−4y
y 9y−4

Question 5:

9fw−2f
f 9w−2

Question 6:

42c2−49bc
7c 6c−7b