The additive inverse of any integera is-a and the additive inverse of any integer-a isa.
The sum of the integer and its negative integer is zero
a+-a=a-a=0
and-a+a=-a+a=0
∴The additive inverse of any integera is-a and the additive inverse of any integer-a isa.
Write the additive inverse (opposite) and work out the sum of the given integers and its additive inverse:
-215