Question

Carlos is on a hike. He starts at 21 meters above sea level. He

stops at 6 meters below sea level. What is the difference in
elevation from when he started the hike to when he stopped?

Answer 1

difference of 27 m

Explanation:

starts at 21m and ends at -6m

21+x=-6

(rearrange so the X is by itself)

21+6=x x=27