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七年级数学培优题精讲：寻找未知数系数的规律，求解一元一次方程
七年级数学培优题精讲：寻找未知数系数的规律，求解一元一次方程。这道题含有的项数较多，需要寻找未知数系数的规律进行求解，这种解题方法值得大家学习并掌握。欢迎观看陈老师课堂的讲解！
七年级数学精选题型解析系列合辑，轻松学习，提高好成绩16/40
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