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GCM OF 12 and 20. Please explain

3 answers

4 is the GCM

because 3x4=12 and 5x4=20

the gcm or greatest common multiple is the largest number that both the factors(in this case 12 and 20) have in common
Google gcm in math and click the fourth one, it may help SHOW you how to do it. It doesn't explain it, but it is a good way to check your answers
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