Pre-Algebra, 2012
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Step-by-step Answer
 PAGE: 179 SET: Exercises PROBLEM: 3
Please look in your text book for this problem Statement

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.

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.

The greatest common factor of 7 and 28 is 7.

The GCF is 7. So, the numbers are not relatively prime.

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