Yi forgot two factors of 63, which are 3 and 21.
This would make the greatest common factor 21.
I think r is 1/2 but is not in the option
I believe your answer is 4 4/9 as a mixed fraction but it can also be 40/9. Hope this helps :)
Answer:
its 5 lol
Step-by-step explanation:
The fraction symbol can also mean division