Question

6. Sofia rearranged the equation 3x+7+2x-8=21

into 3x+2x+7-8=21 in order to combine like
terms more easily. Which of the following properties
did she use to make this manipulation?
(1) The commutative property of addition
(2) The additive property of equality
(3) The distributive property
(4) The associative property of multiplication

Answer 1

1, The Commutative Property of Addition

Explanation:

you’re only changing the order