It is: 9
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The GCF is 9.
The GCF is 9.
It means the highest common factor of two numbers or more. For example the HCF of 18 and 27 is 9 18=2×3×3 27=3×3×3 The common factor is 3×3=9
Reducing the fraction 9/27 is finding the highest common factor (HCF) of 9 and 27 and dividing both of them by the HCF.
If you mean the HCF (highest common factor) it is the highest number which goes into both numbers. In this case it would be 9, as 9x3=27 and 9x8=72.The GCF is: 9