It is: 7
The GCF is 3.
The GCF is 42.
63 = 3x3x7 84 = 2x2x3x7 126 = 2x3x3x7 GCF = 2x2x3x3x7 = 252
The GCF is 21.
The GCF is 1.
GCF(42, 63, 84) = 21.
The GCF is 3.
The GCF of 63, 84 and 126 is 21. The GCF of 6384 and 126 is 42.
The GCF is 21.
The GCF is 21.
If that's 42, 63 and 84, the GCF is 21.
The GCF is 42.
The GCF is 21.
The GCF is 21.
The GCF for 63, 84 & 126, is 21.
The GCF of 42 and 84 is 42.
The GCF is 7.7 is the GCF of 42, 49 and 84.