Respuesta :

Answer:

Not the commutative property but the fact that absolute value is always positive so the absolute value of x is equal to the absolute value of negative x

Step-by-step explanation:

-The commutative property could not have been used, because subtraction doesn’t apply to the commutative property
-The answers are NOT the same.
-If you subtract 4.2-3.4, it will be a positive number. But if you subtract 3.4-4.2, it would be negative.