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(3/8+1/27)×8+19/27
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人气:384 ℃ 时间:2020-02-05 22:05:53
解答
(3/8+1/27)×8+19/27
=3/8*8+1/27*8+19/27
=3+(8/27+19/27)
=3+27/27
=3+1
=4
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