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

The expression is $\"\"$ .

Apply subtraction property of equality: Subtract 8 from each side.

$\"\"$

$\"\"$ (Apply commutative property: $\"\"$ )

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

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

The value of $\"\"$ .