Jordan wrote the following steps to simplify the expression: 5x – (3x + 2 + 4x).

Question

anonymous · Answer

Which step of justification is incorrect, and what should the justification for that step be to simplify the expression?

Step 3; Associative Property of Multiplication

Step 4; Commutative Property of Multiplication

Step 2; Associative Property of Addition

Step 1; Commutative Property of Addition

phi · Answer

associative  means use parens
commutative means swap the order

one of the steps, they swap the order, but say they are using the associative property.
what should they have said ?

anonymous · Answer

so its supposed be the commutative property instead of associative, and that means step 1 is incorrect. right?