Answer:
Option C) 0
Step-by-step explanation:
we know that
The opposite of a number is equal to the same number but with a different sign
The sum of a number with its opposite number is always equal to zero
Let
x -----> a number
The opposite of the number is equal to -x
Adds the number and its opposite
x+(-x)=0
therefore
The sum of these two numbers is zero