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514=214,原來的最簡分數分子减去能被2、3整除的最小一位數,分母加上最小的質數是421,逆推法:分母减去最小的質數2,分子加上6,得原來的最簡分數是:4+621−2=1019;答:原來的最簡分數是1019;故答案為:1019.
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