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Calculate the Greatest Common Factor or GCF of 12

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The instructions to find the GCF of 12 are the next:

1. Decompose all numbers into prime factors

122
62
33
1

2. Write all numbers as the product of its prime factors

Prime factors of 12=22 . 3

3. Choose the common prime factors with the lowest exponent

Common prime factors: 2 , 3

Common prime factors with the lowest exponent: 22, 31

4. Calculate the Greatest Common Factor or GCF

Remember, to find the GCF of several numbers you must multiply the common prime factors with the lowest exponent.

GCF = 22. 31 = 12


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