Let R={(a,b):a,b € Z and (a-b)is even}Then, show that R is an equivalence relation on Z.

Let R={(a,b):a,b € Z and (a-b)is even}Then, show that R is an equiva

1.	Let R={(a,b):a,b € Z and (a-b)is even}Then, show that R is an equivalence relation on Z.
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