## Algebra 1

$s\leq11$
$s-10\leq 1$ : add 10 to both sides $s-10+10\leq 1+10$ : simplify $s\leq 11$ Verify that 11 is a solution at the endpoint. $11-10\overset?= 1$ $1=1\checkmark$ Verify that a number less than 11 is a solution. $10-10\overset?\leq1$ $0\leq1\checkmark$