Answer:
The sum of a number and its additive inverse is always 0.
Step-by-step explanation:
Additive inverse is basically like a negative of a number so like if 15 is the number, its additive inverse is -15 and if a number is -15, its additive inverse is 15. You basically multiply (-1) to the number to get its additive inverse and their sum is always 0 because they just cancel each other out.
E.g. 15 + (-15) = 15-15
= 0
(-15) + 15 = 0
