Question

Confused can anyone help?​

Answer 1

21

Explanation:

List the factors of 63 and 42:

1. 63: 1, 3, 7, 9, 21, 63
2. 42: 1, 2, 3, 6, 7, 14, 21, 42

Find the greatest factor listed in both lists:

1. 21 in the greatest in both lists, so that is the answer (21 is the GCF of 63 and 42)

I hope this helps!

Answer 2

Greatest common factor (GCF) of 42 and 63 is 21