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1减负1等于几
更新时间: 2020-07-07 00:00:00  

根据正负数加减法法则,同号两数相加时,取相同的符号,并把他们的绝对值相加;异号两数相加,取绝对值较大的数的符号,并用绝对值较大的减去绝对值较小的;不同号两数相减,负负得正;零加减任何数都等于原数,所以1减负1等于2。

关键词: 减负 等于

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