$\"\"$

The equation is $\"\"$ .

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

$\"\"$

$\"\"$ (Apply additive inverse property: $\"\"$ )

$\"\"$

Divide each side by 2.

$\"\"$

Check:

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

$\"\"$

Compare the values, the equation is true. The solution is $\"\"$ .

$\"\"$

The solution is $\"\"$ .