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数学
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1/3除以(2/3-2/5)*3/5的简便算法
1/3是三分之一 *是乘以
人气:342 ℃ 时间:2020-04-10 13:21:23
解答
1/3÷(2/3-2/5)*3/5
=1/3*3/5÷(2/3-2/5)
=1/5÷(2/3-2/5)
=1/5÷(10/15-6/15)
=1/5÷4/15
=1/5x15/4
=3/4
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