$\"\"$

The expression is $\"\"$ .

$\"\"$ (Substitute $\"\"$ )

$\"\"$ (Absolute value of $\"\"$ is 4 and it is 4 units from zero)

$\"\"$ (Absolute value of 2 is 2 and it is 2 units from zero) $\"\"$

Rewrite the expression,

$\"\"$

$\"\"$ (Subtract: $\"\"$ ) $\"\"$

The value of the expression is 2.