Ask Question
10 September, 12:28

Jade solved the following equation:

3 + 5x - 7 = 3x - 9

Step

Work

Justification

1

5x + 3 - 7 = 3x - 9

Commutative property of addition

2

5x - 4 = 3x - 9

Addition property of equality

3

2x - 4 = - 9

Subtraction property of equality

4

2x = - 5

Addition property of equality

5

x = - 2.5

Division property of equality

Which step has an incorrect justification?

+3
Answers (2)
  1. 10 September, 14:31
    0
    Step 2

    Step-by-step explanation:

    From the original equation to step 1, 5x and 3 have been switched. This is the commutative property of addition.

    From step 1 to step 2, 3 and - 7 have been combined to make - 4. This is not the addition property of equality; this is addition or simplification.
  2. 10 September, 15:59
    0
    its step 4
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “Jade solved the following equation: 3 + 5x - 7 = 3x - 9 Step Work Justification 1 5x + 3 - 7 = 3x - 9 Commutative property of addition 2 5x ...” in 📘 Mathematics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers