$\"multiplication$ $\"multiplication$ $\"\"$

The equation is $\"\"$ .

Apply subtraction property of equality: Subtract 15 from each side.

$\"\"$

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

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

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

Apply division property of equality: Divide each side by 3.

$\"\"$

$\"\"$ (Cancel common terms)

$\"\"$

The solution of $\"\"$ .