$\"\"$

The equation is $\"\"$ .

Apply distributive property: $\"\"$ .

$\"\"$

$\"\"$ . $\"\"$

Apply addition property of equality: If $\"\"$ then $\"\"$ .

Add 12x to each side.

$\"\"$

$\"\"$ .

Add 5 to each side.

$\"\"$

$\"\"$ . $\"\"$

The option H is correct answer.