SOLUTION: What is the GCF ( greatest common factor ) of 21 and 35? Thanks alot :)!!! Also, are you going to explain it to me? Thanks again!!

Question 924904: What is the GCF ( greatest common factor ) of 21 and 35? Thanks alot :)!!! Also, are you going to explain it to me? Thanks again!!
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
21 = 7*3
35 = 7*5
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by observation the GCF = 7
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