Mathematics, 07.09.2021 14:00 SandyRiverty

Chứng minh rằng tập hợp các số nguyên Z là một nhóm aben với phép toán: axb= a+b-1

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Chứng minh rằng tập hợp các số nguyên Z là một nhóm aben với phép toán: axb= a+b-1...

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