Question

В
то лт
Let N be the set of all natural numbers, show that the relation R
on Nx N, defined by (a, b) R (c,d) a+d=b+c, (a, b),(c,d)
ENX N is an equivalence relation.
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Answer 1

is the qn in russian? Pls post the qn in eng

Answer 2

plz ...type in english...thnx...follow ✌