Simplify 9/18 using the GCF.(1 point)

The greatest common factor (GCF) of 9 and 18 is 9.

To simplify 9/18 using the GCF, divide both the numerator and denominator by 9:
9/9 = 1
18/9 = 2

So, 9/18 simplifies to 1/2.