Answer:
22 ft
Explanation:
Given a river that has a depth in January of -5 ft, and a depth in July of -27 ft, you want the difference between the depths in January and July.
Difference
The difference between two numbers is found by subtracting the second from the first:
(January depth) - (July depth) = (-5 ft) -(-27 ft)
= (-5 +27) ft = 22 ft
The difference between depths in January and July is 22 feet.