Please help me with this equation! Also, please answer in fraction form!

Answer:
-89/40
Step-by-step explanation:
-5/8 + (-8/5) is the same as -5/8 - 8/5.
Find a common denominator when you are adding or subtracting fractions.
8*5 = 40 -- this is your common denominator.
-25/40 - 64/40 = -89/40