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Anonymous
The GCM would be 9 because if you multiply 9*4=36 9*5=45 9*7=63(:
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The GCF is 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.