Question: need help on this question 2. Let G = (Z, ac) be the set of integers with the operation a * b = a |

need help on this question

need help on this question 2. Let G = (Z, ac) be

2. Let G = (Z, ac) be the set of integers with the operation a * b = a | b + 3. (a) (5 points) Prove that G is a group

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