21 and 42 have a GCF of 21. 40 and 80 have a GCF of 40. The GCF of 21 and 40 is 1.
The GCF is 1.
The least common multiple of 21 , 43 = 903
The GCF of these numbers is 40.
50
21 and 42 have a GCF of 21. 40 and 80 have a GCF of 40. The GCF of 21 and 40 is 1.
The GCF is 1.
The GCF is 1.
The GCF is 1.
The GCF is 1.
The GCF is 1.
The GCF is 1.
The GCF is 1.
The GCF is 1.
The GCF is 1.
40 + 44 = (4 x 10) + (4 x 11) = 4 x 21 = 84
The GCF is 1.