用一元分式方程,
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![用一元分式方程,](/uploads/image/z/5290680-48-0.jpg?t=%E7%94%A8%E4%B8%80%E5%85%83%E5%88%86%E5%BC%8F%E6%96%B9%E7%A8%8B%2C)
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用一元分式方程,
用一元分式方程,
用一元分式方程,
设进价为x元
[(12000/1.2X ) +100]*1.1x=12000+4000
答案自己解