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[1.9+(0 6.9-0.84)除以0.6]×4.5
人气:143 ℃ 时间:2020-03-29 14:04:17
解答
[1.9+(6.9-0.84)除以0.6]×4.5
=[1.9+6.06除以0.6]×4.5
=[1.9+10.1]×4.5
=12×4.5
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