additive inverse

The definition of an additive inverse is the number needed to bring a negative number to zero.

(noun)

An example of an additive inverse is the number 30 when added to -30.

See additive inverse in Webster's New World College Dictionary

the number that must be added to a number to equal zero: −5 is the additive inverse of 5

See additive inverse in American Heritage Dictionary 4

noun

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