If the binary operation * on the set Z is defined by a*b`=a+b-5,` then find the identity element with respect to *.

If the binary operation * on the set Z is defined by a a^(*)b=a+b-5, then find the identity element with respect to *

If the binary operation ** on the set ZZ is defined by a**b=a+b-5 , then the identity element with respect to ** is K . Find the value of K .

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 .

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.

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.

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.

Let ** be a binary operation on set QQ-{1} defined by a**b=a+b-abinQQ-{1}. e is the identity element with respect to ** on QQ . Every element of QQ-{1} is invertible, then value of e and inverse of an element a are---

Let ** be a binary operation on the set Z of integers as a**b=a+b+1 . Then find the identity element:

Let ^(*) be a binary operation on set Q-[1] defined by a*b=a+b-ab for all a,b in Q-[1]. Find the identity element with respect to * on Q. Also,prove that every element of Q-[1] is invertible.