0
Anonymous
The GCF is 21.
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It is: 7
The GCF is 3.
The GCF is 42.
63 = 3x3x7 84 = 2x2x3x7 126 = 2x3x3x7 GCF = 2x2x3x3x7 = 252
The GCF is 1.