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

The equation is $\"\"$ .

Apply subtraction Property of equality: Subtract 447 from each side.

$\"\"$ \ \

Apply commutative Property of addition: a + b = b + a. \ \

$\"\"$ \ \

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

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

Check:

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

$\"\"$

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

Compare the values, the equation is true.

$\"\"$

The value of x is $\"\"$ .