Additive inverse
The additive inverse of a number is the number which sums to 
with the other number.
If we have:
![\[a+b=0,\]](http://latex.artofproblemsolving.com/2/e/f/2ef41cd6f6b0d1c55ae3390be1f895608129ebdf.png)
we can say that 
Thus, 
is the additive inverse of 
Examples include 
and 
or 
and 
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