The subtraction equation that represents the problem is ( h-477)metres
Given the following information
If the traffic helicopter descends to hover 477 meters above the ground, then the original height of the helicopter will be:
Original height = h - 477 (Since it is descending)
Hence the subtraction equation that represents the problem is ( h-477) meters
Learn more on subtraction problem here https://brainly.com/question/220101