21
Their GCF is 7 . I don't know what a GFC is.
7^2 - 3*7 49 - 21 28
21, 28, 35, 42, 49, 56.
The first 10 multiples of 7 are: 7, 14, 21, 28, 35, 42, 49, 56, 63, and 70.
7
The GCF is 7.
21
49 − 28 = 21 difference 21 / 28 x 100 = 75%
21, 28, 35, 42, 49
The GCF is 7.
49
It is: 49-28 = 21
Their GCF is 7 . I don't know what a GFC is.
GCF(20, 28) = 4
Factors of 49: 1, 7, 49Factors of 21: 1, 3, 7, 21Factors of 28: 1, 2, 4, 7, 14, 28GCF (49, 21, 28) = 7
It is one.