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It is: 30
The GCF is 35.
The GCF is 105.
18 and 630
The GCF is 300.
The GCF is 75.
The GCF is 10.
The GCF is 70.
The GCF of 630 and 712 is 2.
18
70
The GCF of 294 and 630 is 42.
The GCF of 420 and 630 is 210.
The GCF is 126.
The GCF is 90.