Math
posted by Arreonna R. .
Please write an equation for the following problem: a seagull is gliding 74 1/2 feet above the surface of water. It then dives 80 feet to catch a fish. How many feet below the surface of the water does the seagull dive?

74.5  80 = x

Thank you! I got 5.5, is this correct?

Yes.
The seagull is 5.5 feet beneath the surface. 
How do I get positive 5.5 because I have 5.5?

5.5 is 5.5 below the surface.