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分析:一個數為1、一個數為0,另一個數? 第二式中,若a/b=1,則a=b,與命題衝突;所以b=1. 第一式中,若a=0,則a+b=1,與命題衝突;所以a+b=0,a=-1. 由此可知,三個有理數為0、1、-1.
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