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🔍 Equation Detective

Spot the flaw in this worked solution

Sign Error
Student's Work
Step 1 3x - 5 = 4
Step 2 3x = 4 - 5
Step 3 3x = -1
Step 4 x = -1
What Went Wrong
Sign error: when moving -5 to the other side, it becomes +5. The correct step is 3x = 4 + 5 = 9.
Correct Answer
x = 3

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