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四十九分之三十九×六十五分之五十六÷三十五分之三十六
人气:117 ℃ 时间:2020-10-02 02:00:45
解答
39/49x56/65÷36/35
=39/49x56/65x35/36
=39/49x35/36x56/65
=13/7x5/12x56/65
=13/7x56/65x5/12
=8/5x5/12
=8/12
=2/3
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