Since 7 is a factor of 42, it is automatically the GCF.
The GCF of 42 and 35 is 7.factors of 42: 2,6,7factors of 35: 5,7
The GCF of 7, 42, and 70 is 7.The GCF is 7.
The GCF is 7.
The GCF is 7.
The GCF is 7.
The GCF is 7.
GCF of 42 and 112 and 105 is 7.
The GCF is 7.
The GCF is 7.
The GCF is 7.
The GCF is 7.
The GCF for 42 35 is 7.