
(6.8-6.8*0.55)/805简便计算
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=6.8*(1-0.55)/805
=(8.05-1.25)*0.45/805
=0.45*8.05/805-1.25*0.45/805
=0.0045-1.25*0.45/115*7
=0.0045-1.25/115*0.45/7
=0.0045-1*1*0.0007
=0.0038
=(8.05-1.25)*0.45/805
=0.45*8.05/805-1.25*0.45/805
=0.0045-1.25*0.45/115*7
=0.0045-1.25/115*0.45/7
=0.0045-1*1*0.0007
=0.0038
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展开全部
(6.8-6.8*0.55)/805
=6.8*(1-0.55)/805
=6.8*0.45/805
=0.0038
=6.8*(1-0.55)/805
=6.8*0.45/805
=0.0038
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6.8-6.8*.55~=6.8*.5~=3.4~=3
805~=800
3/8=.375
3/800=0.00375~=0.0038
805~=800
3/8=.375
3/800=0.00375~=0.0038
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