Work Backwards
A hidden number ran through a chain of operations to a number you can see. Reva Reverse's move: start at the end and undo each step — multiplying is undone by dividing, adding by subtracting — until you recover the start.
A hidden number ran through a chain of operations to a number you can see. Reva Reverse's move: start at the end and undo each step — multiplying is undone by dividing, adding by subtracting — until you recover the start.
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