You need at least two numbers to find a GCF.
27
It is: 27
27
The GCF is 27.
It is 9
It is: 9
3
3
It is: 1
Reducing the fraction 9/27 is finding the highest common factor (HCF) of 9 and 27 and dividing both of them by the HCF.
27 and 108 respectively
No. The LCM MUST be a multiple of the HCF.