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Anonymous
The prime factors of 45 are 3 and 5.
Among the factors of 45, (3,5) and (5,9) are co-prime.
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2 x 3 x 5 = 30
3 x 3 x 5 = 45
3 and 5
The GCF is 15.
15
The GCF is 1.
It is: 15