Answer:
15
Step-by-step explanation:
The GCF of 45 and 60 is 15.
First, you have to find the factors for 60 and 45. Then find what factors 60 and 45 have in common. What is the largest factor 60 and 45 have in common?
Factors of 45 are 1 3 5 9 15 45
Factors of 60 are 1 2 3 4 5 6 10 12 15 20 30 60
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