$\"\"$

The numbers that are no more than $\"\"$ unit from $\"\"$ .

Let $\"\"$ represent the numbers that are no more than unit from $\"\"$ .

$\"\"$ (Original inequality)

$\"\"$ (Subtract $\"\"$ from each side)

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

Rewrite the inequality is $\"\"$ . $\"\"$

The inequality is $\"\"$ .