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在教授八年级数学上册(鲁教版)第一章分式方程第三节分式方程的应用中,课本创设如下问题情景:某市从今年1月1日起调整居民用水价
In the application of the eighth-order fractional equation of the first grade equation of the eighth grade mathematics book (Ru Jiao edition), the textbook creates the following problem scenarios: a city adjusts the price of residents from January 1 this year.