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yumionku
2 năm trước
cho biểu thức M = -3 / n-1 với n là số nguyên : a) Số nguyên n phải có điều kiện gì để M là phân số? b) Tìm phân số M , biết 3;n=5;n= -4 MIK CẦN GẤP
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