# Identity element

Identity element:

Identity element is an element of

set which when combined with

another elements , under some binary

operation , leaves it unchanged.

i * x = x * i = x for $x \in s$

In case of addition 0 is the identity .

0 + 6 = 6 + 0 , 0 + (-3) = (-3) + 0 etc

For multiplication identity is 1.

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