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Anonymous
The GCF is 9.
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GCF(18, 45, 63) = 9.
Factors of 45: 1 3 5 9 15 45Factors of 63: 1 3 7 9 21 63The GCF of 45 and 63 is 9The GCF is 9.
The GCF of 18 and 27 is 9.