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数学
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移动等号左边两个数使数式成立
0.2×0.07+0.4×0.6+0.5×0.9+0.18+0.3=1
悬赏高份~~
人气：377 ℃ 时间：2020-05-22 18:31:08
解答
0.2×0.3+0.4×0.6+0.5×0.9+0.18+0.07=1
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