$\"\"$

The equation is $\"\"$ .

$\"\"$ (Product of two same signs is positive)

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

Apply addition property of equality: If a = b then a + c = b + c.

$\"\"$ (Add 16 to each side)

$\"\"$ (Apply additive inverse property: –16 + 16 = 0)

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

Check:

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

$\"\"$

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

The statement is true. $\"\"$

The value of $\"\"$ .