The opposite of a number. For example, the additive inverse of 12 is –12. The additive inverse of –3 is 3. Formally, the additive inverse of x is –x. Note: The sum of a number and its additive inverse is 0. Hope i helped :)
The sum of 15 and it's additive inverse is 0.
What is additive inverse?
If the sum of two number is 0. Then the numbers are called additive inverse of each other.
Let the additive inverse be [tex]x[/tex]
Therefore [tex]x+15=0[/tex]
⇒ [tex]x=-15[/tex]
Hence we can conclude that [tex]-15[/tex] is correct answer.
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