## Algebra 1

$12\lt p$
$9\lt p-3$ : add 3 to both sides $9+3\lt p-3+3$ : simplify $12\lt p$ Verify that 12 is not a solution at the endpoint. $9\overset?\lt 12-3$ $9\ /\!\!\!\!\!\lt 9\checkmark$ Verify that a number greater than 12 is a solution. $9\overset?\lt 14-3$ $9\lt 11\checkmark$