计算或解方程
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8c5af8216bf9303a007a3ba1c41b2c3.png)
(2)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8c5af8216bf9303a007a3ba1c41b2c3.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8967839b63faa70a06fe4ba36cb70d23.png)
更新时间:2023-02-21 09:18:32
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解答题-计算题
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较易
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【推荐2】(1)计算:
① (﹣21)+(﹣13)﹣(﹣25)﹣(+28)
② ﹣22﹣6÷(﹣2)×
③先化简再求值:﹣a2b+(3ab2﹣a2b)﹣2(2ab2﹣a2b),其中 a=﹣1,b=﹣2.
(2)解下列方程
①x=1-(3 x-1)
②
① (﹣21)+(﹣13)﹣(﹣25)﹣(+28)
② ﹣22﹣6÷(﹣2)×
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
③先化简再求值:﹣a2b+(3ab2﹣a2b)﹣2(2ab2﹣a2b),其中 a=﹣1,b=﹣2.
(2)解下列方程
①x=1-(3 x-1)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d5727f926480b8eea7d0537561c7f57.png)
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