The GCF is 9.
The GCF is 9.
The GCF is 9.The GCF is 9.
The GCF is 9.
Factors of 18: 1 2 3 6 9 18 Factors of 81: 1 3 927 81 The GCF of 18 and 81 is 9.
The GCF is 9.
9.
The GCF is 9.
The GCF is 9.
The GCF is 9.
The GCF is 9.
The GCF is 9.
The GCF is 9.
The GCF is 9.63/81 = 7/9
The GCF is 9.
The GCF is 9.The GCF is 9.
Factors of 63: 1, 3, 7, 9, 21 and 63.Factors of 81: 1, 3, 9, 27 and 81.Common factors are 1, 3 and 9.And another method is by finding the GCF of 63 and 81.The factors of GCF are the common factors of 63 and 81.GCF of 63 and 81 is 9. And factors of 9 are 1, 3 and 9.Instead of writing all factors of 63 and 81 it is better to find GCF and then its factors.