Question

Its says find a common denominator for each pair of fractions and then rename each fraction. Please answer it.

Answer 1

24/40 15/40. (common denominator is 5x8)

Answer 2

4: D=40. 24/40 and 15/40
5: D=21. 6/21 and 10/21
6: Sorry I cannot help with this one :(
7: And I cannot see this one well enough to answer it.