Find the GCF 11 , 9

$11$ , $9$

Find the common factors for the numerical part:

$11, 9$

The factors for $11$ are $1, 11$ .

The factors for $11$ are all numbers between $1$ and $11$ , which divide $11$ evenly.

Check numbers between $1$ and $11$

Find the factor pairs of $11$ where $x \cdot y = 11$ .

$\begin{array}{c} x & y \\ 1 & 11 \end{array}$

List the factors for $11$ .

$1, 11$

The factors for $9$ are $1, 3, 9$ .

The factors for $9$ are all numbers between $1$ and $9$ , which divide $9$ evenly.

Check numbers between $1$ and $9$

Find the factor pairs of $9$ where $x \cdot y = 9$ .

$\begin{array}{c} x & y \\ 1 & 9 \\ 3 & 3 \end{array}$

List the factors for $9$ .

$1, 3, 9$

List all the factors for $11, 9$ to find the common factors.

$11$ : $1, 11$

$9$ : $1, 3, 9$

The common factors for $11, 9$ are $1$ .

$1$

The GCF (HCF) of the numerical factors $1$ is $1$ .

$1$