Solve and simply using prime factorization please

Step-by-step explanation:
these look easy you can probably just type it into a calculator, just show your work.
not sure where you got 20 from on the first problem it should be 9/12 I think, based on the examples at the top of the page.
1. 9/12
2. 16/22
3. 30/36
4. 28/44
5. 45/55
6. 50/60
The "/" indicates division btw and or fraction
then do the #x#x#x#x# thing you were doing