1个回答
展开全部
4.7/[(2-1又4分之3)*0.47/2又2分之1] [2又3分之1+(5.4-2又3分之2)*1又3分之2]/3又9分之4
=4.7/(1/4*0.47/5/2)(7/3+27/5×5/3-8/3×5/3)/31/9
=10/(1/4×2/5)(7/3+27/3-40/9)/31/9
=100(102-40)/9×9/31
=100×62/31
=200
=4.7/(1/4*0.47/5/2)(7/3+27/5×5/3-8/3×5/3)/31/9
=10/(1/4×2/5)(7/3+27/3-40/9)/31/9
=100(102-40)/9×9/31
=100×62/31
=200
追问
4.7/[(2-1又4分之3)*0.47/2又2分之1]和[2又3分之1+(5.4-2又3分之2)*1又3分之2]/3又9分之4是分开的
追答
4.7/[(2-1又4分之3)*0.47/2又2分之1]
=4.7/(1/4*0.47/5/2)
=10/(1/4×2/5)
=100
[2又3分之1+(5.4-2又3分之2)*1又3分之2]/3又9分之4
=(7/3+27/5×5/3-8/3×5/3)/31/9
=(7/3+27/3-40/9)/31/9
=(102-40)/9×9/31
=62/31
=2
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