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Subjects>Math>Basic Math

What is the greatest common factor of 18 45 and 63?

Updated: 4/28/2022

Wiki User

∙ 7y ago

Best Answer

Prime factorization of 18 = 2 x 3 x 3

Prime factorization of 45 = 3 x 3 x 5

Prime factorization of 63 = 3 x 3 x 7

It can be seen that 3 x 3 is the greatest number common in the factorization of 18, 45 and 63.

So, GCF is 3 x 3 = 9.

Wiki User

∙ 12y ago

This answer is:

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Wiki User

∙ 7y ago

The GCF of 18, 45, and 63 is 9

18=2*3*3

45=3*3*5

63=3*3*7

3*3=9

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