Short Answer
Suppose A is the set composed of all ordered pairs of positive integers. Let R be the relation defined on A where (a,
b)R(c,d) means that a + d = b + c.
(a) Prove that R is an equivalence relation.
(b) Find [(2, 4)].
Correct Answer:
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(a) Reflexive: 
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Correct Answer:
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; Sy...View Answer
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