$\"\"$

The equation is $\"\"$ .

Combine like terms using distributive property: $\"\"$ .

$\"\"$

Add 7 to each side.

$\"\"$

Add 2w to each side.

$\"\"$

Combine like terms using distributive property: $\"\"$ .

$\"\"$

Divide each side by 2.

$\"\"$

The value of $\"\"$ .