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二元一次不定方程 Huang kuo-chung
Author:
waydie
二元一次不定方程 Huang kuo-chung
問題1: 弟弟今年x歲,四年後年齡比哥哥(現在)小2歲,問弟弟今年幾歲? 問題2:弟弟今年x歲，弟弟年齡的43倍比哥哥的30倍多3歲，問弟弟今年幾歲？
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