(6.9×八分之一×1.75)÷(2.3×8分之1×0.25)
=10分之69×8分之1×100分之175)÷(10分之23×8分之1×4分之1)
=320分之483÷320分之23
=21
(6.9×8分之1×1.75)÷(2.3×8分之1×0.25)
(6.9×8分之1×1.75)÷(2.3×8分之1×0.25)
数学人气:461 ℃时间:2020-02-04 10:03:47
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