Question

see attahcment

Answer 1

MA.912.A.3.2

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
Step 1; Commutative Property of Addition
Step 2; Associative Property of Addition
Step 3; Associative Property of Multiplication
Step 4; Commutative Property of Multiplication

Answer 2

one second ok?

Answer 3

ok

Answer 4

Step 1; Commutative Property of Addition? i might be wrong/

Answer 5

wait for others to answer before you decide.

Answer 6

I agree with tommo. Step 1 doesn't show Associative Prop but Commutative 'cause the book only rearranged the terms not regrouped them.

Answer 7

so medal time ?;D for helping you?

Answer 8

thanks

Answer 9

thanks and you're welcome