![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
Method 1:
\List the factors of each number.
\Factors of 7: 1, 7
\Factors of 28: 1, 2, 4, 7, 14
\Identify the greatest common factor.
\The greatest common factor of 7 and 28 is 7.
\The GCF is 7. So, the numbers are not relatively prime.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step2.JPG\")
Method 2:
\Write the prime factorization of each number.
\7 = 1 × 7.
\28 = 2 × 2 × 7.
\The GCF is the product of the common prime factors in each number.
\GCF = 7.
\The greatest common factor of 7 and 28 is 7.
\The GCF is 7. So, the numbers are not relatively prime.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The greatest common factor of 7 and 28 is 7.
\The GCF is 7. So, the numbers are not relatively prime.