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Read this word problem.
Clara and her family are vacationing in the Netherlands. They began a tour of the North Sea coastline at an elevation of

8 feet. By the end of the tour, their elevation had decreased by 5 feet. What was their elevation at the end of the tour?
To solve the problem, Braden subtracted

8–5 and came up with an answer of

13 feet. Is Braden correct? Why or why not?