Mathematics

Leandro Hansen

13 July, 17:57

Jade solved the following equation:

3 + 5x - 7 = 3x - 9

Step Work Justification

1 5x + 3 - 7 = 3x - 9 Commutative propertyof 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?

Step 4

Step 3

Step 2

Step 1

+5

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