Problem 124 of 7
A student solves 3x + 6 = 21 using the wrong operation order: divide by 3 first to get x + 6 = 7. Explain the error and repair the solution.
Using a hint is okay. It just tells the trainer to give you a little more review.
Hidden until you reveal it.
critique operation sequence and repair it.
Hidden until you reveal it.
Wrong path must use an inverse operation in an invalid order or without applying it to the whole side.
Enter your answer
Your answer is equivalent to the expected form.
Walkthrough
Full solution stays hidden until you ask for it.
1. Identify the structure of the equation before choosing inverse operations.
2. Undo outer operations correctly or apply operations to every term.
3. Show the repaired sequence.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Only giving the final answer without repairing the reasoning.