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

The equation is $\"\"$

According to division property of equality: if $\"\"$ , then $\"\"$ .

$\"\"$ (Divide each side by neative 4)

$\"\"$ (Cancel common terms)

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

Verify:

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

$\"\"$

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

Compare the values, the equation is true.

$\"\"$

The value of $\"\"$ .