Jordan wrote the following steps to simplify the expression: 5x – (3x + 2 + 4x).
Step
Mathematical Statement
Justification
0
5x – (3x + 2 + 4x)
Given
1
5x – (3x + 4x + 2)
Associative Property of Addition
2
5x – (7x + 2)
Combine Like Terms
3
5x – 7x – 2
Distributive Property
4
(5x – 7x) – 2
Associative Property of Addition
5
–2x – 2
Combine Like Terms
Which step of justification is incorrect, and what should the justification for that step be to simplify the expression?
Answer

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3 distributive property

not sure about 2 ... i think that would be operation between two elements

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