Hello! The additive inverse of -2/5 is 2/5.
if you add -2/5+2/5, you will get 0, so these two numbers are opposites and additive inverses.
Hope this helps you!
~Just a joyful teen

Answer:

Step-by-step explanation:
Weight from before + Weight gained

Convert to improper fractions.

Find the common denominator.

Add.

Convert to a mixed fraction.
