To factor 9z + 18 using the greatest common factor (GCF), we need to find the largest common factor of both 9z and 18.
The GCF of 9z and 18 is 9 because 9 is a common factor of both 9 and 18, and it is the largest factor they have in common.
We can rewrite 9z + 18 as 9(z + 2) by factoring out the GCF.
factor 9z+18 using gcf
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