$\"\"$

The statement is $\"\"$ .

By the definition of subtraction, convert the subtraction to addition.

$\"\"$ (Add the opposite of the number being subtracted) $\"\"$

$\"\"$ (Apply the associative property of addition)

= $\"\"$ (Product of two different signs is negative)

The expression simplifies to $\"\"$ .

The statement is true. $\"\"$

The statement is true.