解方程:X+3/4X=28列式计算:一个长方形宽是1/4分米,长是宽的3/2,长是多少分米?用去1/4(1/4是30千克)共?千克根据规律写一写:(1)4/5,2/5,1/5,(),(),1/40,();(2)2/3,3/2
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![解方程:X+3/4X=28列式计算:一个长方形宽是1/4分米,长是宽的3/2,长是多少分米?用去1/4(1/4是30千克)共?千克根据规律写一写:(1)4/5,2/5,1/5,(),(),1/40,();(2)2/3,3/2](/uploads/image/z/701616-48-6.jpg?t=%E8%A7%A3%E6%96%B9%E7%A8%8B%EF%BC%9AX%2B3%2F4X%3D28%E5%88%97%E5%BC%8F%E8%AE%A1%E7%AE%97%EF%BC%9A%E4%B8%80%E4%B8%AA%E9%95%BF%E6%96%B9%E5%BD%A2%E5%AE%BD%E6%98%AF1%2F4%E5%88%86%E7%B1%B3%EF%BC%8C%E9%95%BF%E6%98%AF%E5%AE%BD%E7%9A%843%2F2%EF%BC%8C%E9%95%BF%E6%98%AF%E5%A4%9A%E5%B0%91%E5%88%86%E7%B1%B3%EF%BC%9F%E7%94%A8%E5%8E%BB1%2F4%EF%BC%881%2F4%E6%98%AF30%E5%8D%83%E5%85%8B%EF%BC%89%E5%85%B1%EF%BC%9F%E5%8D%83%E5%85%8B%E6%A0%B9%E6%8D%AE%E8%A7%84%E5%BE%8B%E5%86%99%E4%B8%80%E5%86%99%EF%BC%9A%EF%BC%881%EF%BC%894%2F5%EF%BC%8C2%2F5%EF%BC%8C1%2F5%EF%BC%8C%EF%BC%88%EF%BC%89%EF%BC%8C%EF%BC%88%EF%BC%89%EF%BC%8C1%2F40%EF%BC%8C%EF%BC%88%EF%BC%89%EF%BC%9B%EF%BC%882%EF%BC%892%2F3%EF%BC%8C3%2F2)
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