Answer:
The additive inverse of -4 and
is 4 and 
Step-by-step explanation:
Given numbers -4 and 
We have to find the additive inverse of the given numbers.
Additive inverse is the number added to a given number that the sum of number is equal to zero. that is 
For given number a = -4
Let number x is added to -4 so that result is 0
⇒ x = 4
Thus, additive inverse of -4 is +4.
For given number a = 
Let additive inverse be x,

⇒ 
Thus, additive inverse of
is 
Thus, the additive inverse of -4 and
is 4 and 