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﹣2+﹙1-0.2÷5分之3﹚×﹙﹣3﹚
人气:231 ℃ 时间:2020-05-26 03:09:33
解答
﹣2+﹙1-0.2÷5分之3﹚×﹙﹣3﹚
= -2+(1-1/3)x(-3)
= -2+2/3x(-3)
= -2+(-2)
= -2-2
= -4
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