if the binary operation * on the set Z of integers is defined by a * b = a + - Maths - Relations and Functions

Question

if the binary operation * on the set Z of integers is
defined by a * b = a + b -5 , then write the identity
element for the operation * in Z

Himanshu · Accepted Answer

<img alt="" width="137" height="71" src=
"https://s3mn%20mnimgs%20com/img/shared/discuss_editlive/5057757/2013_06_11_10_45_14/image1781292838059557768%20jpg">
Therefore, 5 is the identity element for the operation * in
Z

if the binary operation * on the set Z of integers is defined by a * b = a + b -5 , then write the identity element for the operation * in Z