①、已知x/(a-b) =y/(b-c) =z/(c-a) [a、b、c互不相等]求x+y+x的值.②、某自来水公司的水费计算如下:每户每月用水不超过5方,每方水费0.85元;超过5方,超出部分每方收较高的定额费用.已知7月小影
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![①、已知x/(a-b) =y/(b-c) =z/(c-a) [a、b、c互不相等]求x+y+x的值.②、某自来水公司的水费计算如下:每户每月用水不超过5方,每方水费0.85元;超过5方,超出部分每方收较高的定额费用.已知7月小影](/uploads/image/z/5173600-40-0.jpg?t=%E2%91%A0%E3%80%81%E5%B7%B2%E7%9F%A5x%2F%28a-b%29+%3Dy%2F%28b-c%29+%3Dz%2F%28c-a%29+%5Ba%E3%80%81b%E3%80%81c%E4%BA%92%E4%B8%8D%E7%9B%B8%E7%AD%89%5D%E6%B1%82x%2By%2Bx%E7%9A%84%E5%80%BC.%E2%91%A1%E3%80%81%E6%9F%90%E8%87%AA%E6%9D%A5%E6%B0%B4%E5%85%AC%E5%8F%B8%E7%9A%84%E6%B0%B4%E8%B4%B9%E8%AE%A1%E7%AE%97%E5%A6%82%E4%B8%8B%EF%BC%9A%E6%AF%8F%E6%88%B7%E6%AF%8F%E6%9C%88%E7%94%A8%E6%B0%B4%E4%B8%8D%E8%B6%85%E8%BF%875%E6%96%B9%2C%E6%AF%8F%E6%96%B9%E6%B0%B4%E8%B4%B90.85%E5%85%83%EF%BC%9B%E8%B6%85%E8%BF%875%E6%96%B9%2C%E8%B6%85%E5%87%BA%E9%83%A8%E5%88%86%E6%AF%8F%E6%96%B9%E6%94%B6%E8%BE%83%E9%AB%98%E7%9A%84%E5%AE%9A%E9%A2%9D%E8%B4%B9%E7%94%A8.%E5%B7%B2%E7%9F%A57%E6%9C%88%E5%B0%8F%E5%BD%B1)
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