How do you find the GCF of 3 and 9?

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Answer 1 · 2018-03-06T14:59:48

See a solution process below:

Find the prime factors for each number as:

#3 = 3#

#3# is a prime number and cannot be factored

#9 = 3 xx 3#

Now identify the common factors and determine the GCF:

#3 = color(red)(3)#

#9 = color(red)(3) xx 3#

Therefore:

#"GCF" = color(red)(3)#