Answer:
9.
Step-by-step explanation:
Factors of 27: 1, 3, 9, 27
Factors of 45: 1, 3, 5, 9, 15, 45.
The GCF (Greatest Common Factor) of 27 and 45 is NOT 1, 3, or 27 because 27 is not a factor of 45, and since we are trying to figure out the GREATEST common factor, one and three do not work either. If you need more help, feel free to ask! I am on Brainly from 1 - 2 pm. EST, so if you have any further questions about this subject or my answer, feel free to ask me!
