can someone help me find the GCF of 18x3 and 30x5 please?

Question

can someone help me find the GCF  of 18x3 and 30x5 please?

anonymous · Answer

can anyone help me ?

directrix · Answer

Greatest Common Factor
The highest number that divides exactly into two or more numbers. 

18x3 
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18 has factors 2, 3, 6, 
3 has a factor of 3.

The GCF of 18 and 3 is 3.

If you intersect the sets {2,3,6} an {3} the only common element is 3.

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You do 30x5 and post here, please.

anonymous · Answer

i dont know how to do it so can u show me

directrix · Answer

30x5 GCF
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Factors of 30 are 2, 3, 5, 10, 15
Factors of 5 are 5

Intersection of factor sets is 5.

5 is the greatest common factor --> ANS