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七年级数学培优题精讲：依据题目定义的求值方法，求解代数式的值
七年级数学培优题精讲：依据题目定义的求值方法，求解代数式的值。解决本题的关键是根据题目给出的新定义，利用几个代数式之间的关系进行求解。这种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11/40
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