![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
Method 1:
\List the factors of each number.
\Factors of 76 : 2, 4, 19, 38
\Factors of 86 : 2, 43, 86
\Identify the greatest common factor.
\The greatest common factor of 76 and 86 is 2.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step2.JPG\")
Method 2:
\Write the prime factorization of each number.
\76 = 2 × 2 × 19.
\86 = 2 × 43.
\The GCF is the product of the common prime factors in each number.
\GCF = 2.
\The greatest common factor of 76 and 86 is 2.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The greatest common factor of 76 and 86 is 2.