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2题分数递等式求解
1:9×3/2-4/3÷2/1 2:5-8/7×49/40-7/2
人气:437 ℃ 时间:2020-05-11 21:41:19
解答
1:9×3/2-4/3÷2/1
=6-2/3
=2/9
2:5-8/7×49/40-7/2
=5-7/5-7/2
=5-1
=4
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