Question: please explain step by step 6. Determine which of the following relations R on Z are equivalence relations. If R is not an equivalence relation,

please explain step by step

6. Determine which of the following relations R on Z are equivalence relations. If R is not an equivalence relation, explain why. (a) QR!) ifand only if abZO. (b) aRb if and only if |a| = |b|. ((3) GR b if and only if ab 2 0

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