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750千克:2/3吨
人气:388 ℃ 时间:2020-06-18 18:48:49
解答
750千克:2/3吨
=3/4吨:2/3吨
=(3/4吨×12):(2/3吨×12)
=9吨:8吨
=9:8
=9/8
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