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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.

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12y ago

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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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8y ago
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Q: What is the greatest common factor of 18 45 and 63?
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