How do you find the GCF of #18, 45mn#?

1 Answer
Jan 29, 2017

Answer:

9

Explanation:

firstly, write down the factors for each number

#"factors of 18: "{1,2,3,6,9,18}#

#"factors of 45"mn": {1,3,5,9,15,45,m,n}#

now pick out the common factors

#{1,3,9}#

#:.GCF=9#