Question

Burniece solved the following equation:

4x − 2x + 8 = 6(x + 4)

Step
Work
Justification
1
2x + 8 = 6(x + 4)
Combine like terms

2
2x + 8 = 6x + 24
Distributive property
3
−4x + 8 = 24
Subtraction property of equality
4
−4x = 16
Addition property of equality
5
x = −4
Division property of equality


Which step has an incorrect justification?

Step 1
Step 2
Step 3
Step 4

Answer 1

step 4

Explanation:

i just took the test :) ;)

Answer 2

Step 4 has the incorrect justification.

In order to isolate the x variable, she subtracts 8 from both sides making it another subtraction property of equality justification.