Answer:
Step-by-step explanation:
According to Wikipedia, the area of the Gates of the Arctic National Park and Preserve is about 34,287.02 km^2.
Your equation could be ...
difference in area = (area of Gates of the Arctic) - (area of New Jersey)
Filling in the numbers, the equation becomes ...
difference in area = (34,287 km^2) -(19,047 km^2)
The solution is ...
difference in area = 15,240 km^2