Answer:
x+3
Explanation:
The additive inverse of any number a is the number that when added to a, yields a sum of 0. In other words, if b is the additive inverse of a, then a+b=0.So, to find the additive inverse of -x-3, we need to find another number such that their sum equals zero. Let's call this number y. Then, we have:(-x-3) + y = 0Solving for y, we get:y = -( -x-3 )
y = x + 3Therefore, the additive inverse of -x-3 is x+3.