The GCF is: 1
The GCF is 1.
The GCF is 1.The GCF of 14, 21 and 24 is 1.
The GCF of 39 & 14 is 1.
The GCF is 1.
The GCF is 1.
The GCF is 1.
The GCF is 1.
The GCF is 1.
The GCF is 1.
The highest common factor of 9 and 14 is 1. (They are relatively prime.)
Since 7 is a factor of 14, it is automatically the GCF.