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

The inequality is $\"\"$

$\"\"$ (According to distributive property: $\"\"$ ) $\"\"$

Apply addition property of inequality: Add 6n to each side

$\"\"$

$\"\"$ (Additive inverse property: $\"\"$ )

$\"\"$ (Additive identity property: $\"\"$ )

All real numbers are solutions because $\"\"$ is false. $\"\"$

The equality solution set is $\"\"$