$\"\"$

The equation is $\"\"$ .

Apply Addition property of equality: Add 4.1 form each side.

$\"\"$

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

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

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

$\"\"$

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

The equation is true. $\"\"$

The value is $\"\"$ .