How do you find the GCF of 12 and 56?

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Answer 1 · 2018-03-06T15:12:43

See a solution process below:

Find the prime factors for each number as:

#12 = 2 xx 2 xx 3#

#56 = 2 xx 2 xx 2 xx 7#

Now identify the common factors and determine the GCF:

#12 = color(red)(2) xx color(red)(2) xx 3#

#56 = color(red)(2) xx color(red)(2) xx 2 xx 7#

Therefore:

#"GCF" = color(red)(2) xx color(red)(2) = 4#