$\"\"$

The equation is $\"\"$ .

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

Apply multiplication property of equality: If a = b then $\"\"$ .

$\"\"$ (Multiply each side by 9)

$\"\"$ (Cancel common terms) $\"\"$

Apply division property of equality: If a = b then $\"\"$ .

$\"\"$ (Divide each side by negative 7)

$\"\"$ (Cancel common terms) $\"\"$

Check:

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

$\"\"$

$\"\"$ (Apply multiplicative identity property: $\"\"$ )

The statement is true. $\"\"$

The value of $\"\"$ .