58cv网址导航五年级数学简易方程 a-a=a*a a=? a+a=a÷a a=? \_百度知道
五年级数学简易方程 a-a=a*a a=? a+a=a÷a a=? \
2 good good study 第一题0第二题1&#47!,day day up
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所以a=1&#47，所以a*a＝0，左边a-a=0，所以a+a=1;a=1，所以a=0第二式，右边a&#47第一式
a-a=a*a a=0；a+a=a÷a a=0，1
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-a=a那么a等于多少
提问者采纳
订埂斥忌俪涣筹惟船隶-a=a得0啊 因为0的相反数还是0 由题意可看出 -a+a=0
提问者评价
原来是这样，感谢！
-a=a2a=0所以a=0
-｜a｜=｜a｜，那么a等于0
如果本题有什么不明白可以追问，如果满意请点击“采纳为满意回答” 如果有其他问题请采纳本题后另发点击向我求助，答题不易，请谅解，谢谢。 祝学习进步！
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—a这要看你是问哪方面的，数学方面的就是a=0，其他的方面看情况，-a也只是c语言中的
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