7(4 - x)=9( x - 4 )和6(3x - 2) - 4(4x - 3 )=1方程怎么解还有几道题问大家全部答对的我加悬赏 1.一袋白面每袋50元,连续两次减价10%后,售价应为( )元.2.父亲比儿子大30岁,明年儿子的年龄恰好是父
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![7(4 - x)=9( x - 4 )和6(3x - 2) - 4(4x - 3 )=1方程怎么解还有几道题问大家全部答对的我加悬赏 1.一袋白面每袋50元,连续两次减价10%后,售价应为( )元.2.父亲比儿子大30岁,明年儿子的年龄恰好是父](/uploads/image/z/404816-32-6.jpg?t=7%EF%BC%884+-+x%29%3D9%28+x+-+4+%29%E5%92%8C6%283x+-+2%29+-+4%284x+-+3+%29%3D1%E6%96%B9%E7%A8%8B%E6%80%8E%E4%B9%88%E8%A7%A3%E8%BF%98%E6%9C%89%E5%87%A0%E9%81%93%E9%A2%98%E9%97%AE%E5%A4%A7%E5%AE%B6%E5%85%A8%E9%83%A8%E7%AD%94%E5%AF%B9%E7%9A%84%E6%88%91%E5%8A%A0%E6%82%AC%E8%B5%8F+1.%E4%B8%80%E8%A2%8B%E7%99%BD%E9%9D%A2%E6%AF%8F%E8%A2%8B50%E5%85%83%2C%E8%BF%9E%E7%BB%AD%E4%B8%A4%E6%AC%A1%E5%87%8F%E4%BB%B710%25%E5%90%8E%2C%E5%94%AE%E4%BB%B7%E5%BA%94%E4%B8%BA%EF%BC%88+%EF%BC%89%E5%85%83.2.%E7%88%B6%E4%BA%B2%E6%AF%94%E5%84%BF%E5%AD%90%E5%A4%A730%E5%B2%81%2C%E6%98%8E%E5%B9%B4%E5%84%BF%E5%AD%90%E7%9A%84%E5%B9%B4%E9%BE%84%E6%81%B0%E5%A5%BD%E6%98%AF%E7%88%B6)
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