$\"\"$

The equation is $\"\"$ .

Group like terms and apply distributive property: $\"\"$ .

$\"\"$

Add 0.4z to each side.

$\"\"$

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

Subtract 1.9 from each side.

$\"\"$

Divide each side by 1.2.

$\"\"$

Cancel common terms.

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

The value of $\"\"$ .