递等式简便计算,应用题一道,方程一题.27.42-(5.7+4.42) 16.5-0.25×5-7.25一根铁丝,可围成面积为49平方厘米的正方形,如果围成宽是4厘米的长方形,求长方形的面积.3×(x-7)=0.6外加应用题一道。从
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![递等式简便计算,应用题一道,方程一题.27.42-(5.7+4.42) 16.5-0.25×5-7.25一根铁丝,可围成面积为49平方厘米的正方形,如果围成宽是4厘米的长方形,求长方形的面积.3×(x-7)=0.6外加应用题一道。从](/uploads/image/z/583208-8-8.jpg?t=%E9%80%92%E7%AD%89%E5%BC%8F%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97%2C%E5%BA%94%E7%94%A8%E9%A2%98%E4%B8%80%E9%81%93%2C%E6%96%B9%E7%A8%8B%E4%B8%80%E9%A2%98.27.42-%EF%BC%885.7%2B4.42%EF%BC%89+16.5-0.25%C3%975-7.25%E4%B8%80%E6%A0%B9%E9%93%81%E4%B8%9D%2C%E5%8F%AF%E5%9B%B4%E6%88%90%E9%9D%A2%E7%A7%AF%E4%B8%BA49%E5%B9%B3%E6%96%B9%E5%8E%98%E7%B1%B3%E7%9A%84%E6%AD%A3%E6%96%B9%E5%BD%A2%2C%E5%A6%82%E6%9E%9C%E5%9B%B4%E6%88%90%E5%AE%BD%E6%98%AF4%E5%8E%98%E7%B1%B3%E7%9A%84%E9%95%BF%E6%96%B9%E5%BD%A2%2C%E6%B1%82%E9%95%BF%E6%96%B9%E5%BD%A2%E7%9A%84%E9%9D%A2%E7%A7%AF.3%C3%97%EF%BC%88x-7%EF%BC%89%3D0.6%E5%A4%96%E5%8A%A0%E5%BA%94%E7%94%A8%E9%A2%98%E4%B8%80%E9%81%93%E3%80%82%E4%BB%8E)
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