How do you find the GCF of 12 and 18?

1 Answer
Jan 16, 2017

Answer:

LIst all of the factors of 12 and 18. Then find the unique factors and multiple them.

Explanation:

the factors of 12 are # 2 xx 2 xx 3 # or # 2^2 xx 3#

the factors of 18 are # 2 xx 3 xx 3 # or # 2 xx 3^2#

There are two 2's in 12 and one 2 in 18 so the GCF must have one 2's

There are two 3's in 18 and one 3 in 12 so the GCF must have one 3's

So the GCG is # 2 xx 3# =6