Answer:
You basically just go by these steps: In mathematics, the additive inverse of a number a is the number that, when added to a, yields zero. This number is also known as the opposite (number), sign change, and negation. For a real number, it reverses its sign: the opposite to a positive number is negative, and the opposite to a negative number is positive. So you do the same with 8 and then the 5 and boom your answer is there its simple.
Hope I helped!
