$\"\"$

The inequality is $\"\"$

Apply addition property of inequality: Add 4 to each side.

$\"\"$ $\"\"$

$\"\"$ (Apply commutative property of addition: a + b = b + a)

$\"\"$ (Apply additive inverse property: $\"\"$ )

$\"\"$ (Add: $\"\"$ )

Graph the solution set on a number line

$\"\"$

Check:

To check, substitute a number greater than 27 in $\"\"$ .

$\"\"$

$\"\"$ (Add: $\"\"$ ) $\"\"$

The inequality solution set is $\"\"$ .