Question

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

Step
Mathematical Statement
Justification
0
3 – (x + 2x – 5)
Given
1
3 – x – 2x + 5
Distributive Property
2
3 + 5 – x – 2x
Commutative Property of Addition
3
(3 + 5) + (–x – 2x)
Commutative Property of Addition
4
8 – 3x
Combine Like Terms

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

Answer 1

Step 3; Associative Propert

Answer 2

step 3