Marshall had twice as many marbles ae Esther.when Esther gave him 12 of her marbles,he then hai 120 more marbles than he
问题描述：
Marshall had twice as many marbles ae Esther.when Esther gave him 12 of her marbles,he then hai 120 more marbles than her.how many marbles did Esther have at first
答
原题是：已知Marshall的弹珠是Esther的两倍,若Esther给Marshall 12个弹珠,则Marshall比Esther多120个弹珠,求 刚开始的时候 Esther有几个弹珠呢?设Esther有x个 ,则Marshall有2x个,由题知,X-12=2X+12-120解得 x =96所...