有下列说法:①若|a|=|b|,则a=b;②两个数相加,若和为负数,则这两个数必定都是负数;③如果a+b<0,ab<0,那么这两个数一定一正一负,且负数的绝对值大;④正数的倒数大于它本身.则其中正确的序号有 _____ .
更新时间:2022-10-14 14:06:25
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【推荐2】绝对值不小于4,且不大于9的所有整数的和为 _____ .
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【推荐1】已知|x|=2,|y|=6,若x+y<0,则x﹣y=_____ .
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【推荐2】a、b、c三个数的位置如图所示:则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
____ 0,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/980ab4deb9e7f2bc9288787f5243a4d2.png)
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【推荐2】已知
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________ .
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