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  3. in exercises 57 determine whether the binary operation quot defined...

Question: in exercises 57 determine whether the binary operation quot defined...

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In Exercises 5-7, determine whether the binary operation defined is commutative and whether is associative. 5 * is defined on Q by letting ab a-b 6 is defined on Z by letting a b- ab-a-b 7 * is defined on Z+ by letting a bab
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