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

The equation is $\"\"$ .

According to multiplication property of equality: Multiply each side by $\"\"$ .

$\"\"$

$\"\"$ (Cancel common terms) $\"\"$

According to subtraction property of equality: Subtract $\"\"$ from each side.

$\"\"$

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

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

$\"\"$ (Simplify) $\"\"$

The value of $\"\"$ .