$\"\"$

The equation is $\"\"$ .

Subtract 7 from each side.

$\"\"$

Divide each side by negative 2.

$\"\"$

$\"\"$ .

The solution is $\"\"$ .

$\"\"$

Check:

Substitute the value $\"\"$ in the original equation : $\"\"$ .

$\"\"$

$\"\"$ \ \

$\"\"$

$\"\"$ .

Since the above statement is true, $\"\"$ is a solution of $\"\"$ .

$\"\"$

The solution of $\"\"$ is $\"\"$ .