$\"\"$

First factor the numerator and denominator.

64 = 2 · 2 · 2 · 2 · 2 · 2

68 = 2 · 2 · 17

The GCF is the product of the common prime factors in each term.

GCF = 2 · 2 = 4 $\"\"$

Divide the numerator and the denominator by GCF.

$\"\"$

$\"\"$ (Simplify) $\"\"$

Simplifest form of the fraction $\"\"$ is $\"\"$ .