$\"subtraction$ $\"\"$

The equality is $\"\"$ .

Apply multiplication property of equality: Multiply each side by negative 2.

$\"\"$

$\"\"$ (Cancel common terms)

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

Check:

To check, substitute $\"\"$ , in $\"\"$ .

$\"\"$

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

The equality is true. $\"\"$

The equality solution is $\"\"$ .