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
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