$\"\"$

The equation is $\"\"$ .

$\"\"$ (Apply distributive property: $\"\"$ )

$\"\"$ (Subtract: $\"\"$ ) $\"\"$

$\"\"$ (Divide each side by negative 2)

$\"\"$ (Cancel common terms)

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

Check:

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

$\"\"$

$\"\"$ (Product of two different signs is negative)

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

The statement is true. $\"\"$

The value of $\"\"$ .