elynnea4xl

2023-02-21

How to find the greatest common factor of 24, 28?

anthroposmlvd

You could discover the prime factors of $24$ and $28$.

$24={2}^{2}\cdot 3$
$28={2}^{2}\cdot 7$

We see that $24$ and $28$ have ${2}^{2}$ in common and nothing else, so the greatest common factor is

${2}^{2}=4$

There are other ways to find the GCF as well such as listing out all the factors of each number and picking out the greatest, which is a little more tedious and unnecessary.

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