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Anonymous
4n + 30 = 2(2n + 15)
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The GCF is 4n
It can be. 30 is a factor of 60.
20 is not a factor of 30
30 is a factor of 150 so 30 is the greatest common factor of 30 and 150
The greatest common factor (GCF) of 20 and 30 is 10.