9/4*0.84+2.25*4/25 用简便方法做?
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9/4*0.84+2.25*4/25 用简便方法做?
9/4*0.84+2.25*4/25 用简便方法做?
9/4*0.84+2.25*4/25 用简便方法做?
9/4*0.84+2.25*4/25
=2.25*(0.84+0.16)
=2.25
9/4*0.84+2.25*4/25 用简便方法做?
9/4*0.84+2.25*4/25 用简便方法做?
9/4*0.84+2.25*4/25 用简便方法做?
9/4*0.84+2.25*4/25
=2.25*(0.84+0.16)
=2.25