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

The equation is $\"\"$ .

Apply subtraction property of equality: Subtract 7 from each side.

$\"\"$

$\"\"$ (Additive inverse property: $\"\"$ )

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

$\"\"$

Check:

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

$\"\"$

$\"\"$ (Add: $\"\"$ ) $\"\"$

The solution is $\"\"$ .