Two numbers are additive inverses of each other if their sum is 0 (e.g., since -4 + 4 = 0, then -4 and 4 are additive inverses of each other).

The opposite (negative) of a number. Any number plus its additive inverse equals 0.

Two numbers that equal 0 when added together. The numbers 14 and -14 are additive inverses of each other.

A number that when added to a given number results in a sum of zero; the opposite of a number.

In mathematics, the additive inverse, or opposite, of a number n is the number that, when added to n, yields zero. The additive inverse of n is denoted −n.