$\"\"$

The equation is $\"\"$ .

Apply multiplication property of equality: Multiply each side by 3.

$\"\"$

$\"\"$ (Cancel common terms)

$\"\"$ (Multiply: $\"\"$ ) $\"\"$

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

$\"\"$

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

The solution is $\"\"$ .