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

The equation is $\"\"$ .

Apply multiplication Property of equality: Multiply each side by negative 45.

$\"\"$

$\"\"$ (Product of two same signs is positive)

$\"\"$ (Cancel common terms)

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

Check:

To check the solution, substitute $\"\"$ in original equation.

$\"\"$

$\"\"$ (Divide: $\"\"$ )

Compare the values, the equation is true.

$\"\"$

The value of z is 18.