 When it was used for the first time?

In 1953, it was used for the first time.

An element when added to a given element in a specified group provides that element unchanged is known as additive identity.

Such that

element “a” belongs to a set, now adding any number in “a” gives that number unchanged.i, e.

`a + 5 = 5`

##### An example of additive identity

Zero (0) is the additive identity in the set of real numbers.

Another example of proper understanding:

If you have 6 candies. You bought zero more candies. Now, how many total candies do you have?

`6 + 0 = 6`

Definition:

An element when added to a given element in a specified group gives 0 as the result is known as additive inverse.

The additive inverse is usually the negative of a given number, especially in the case of real numbers.

Such that

Element “a” belongs to a set. If we add negative of “a” I,e  “-a” it gives the result zero as:

`a + (-a) = 0`
##### Example of the additive inverse

-5 + 5 = 0

The numbers 5 and -5 both are the additive inverse of each other.

Another example for proper understanding:

If you have 6 candies. You ate all the 6 candies. Now, how many remaining candies do you have?

6 + (-6) = 0