# How do you find the GCF of 3 and 9?

Mar 6, 2018

See a solution process below:

#### Explanation:

Find the prime factors for each number as:

$3 = 3$

$3$ is a prime number and cannot be factored

$9 = 3 \times 3$

Now identify the common factors and determine the GCF:

$3 = \textcolor{red}{3}$

$9 = \textcolor{red}{3} \times 3$

Therefore:

$\text{GCF} = \textcolor{red}{3}$