78.6-0.786×25+75％×21.4）÷2001
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78.6-0.786×25+75％×21.4）÷200178.6-0.786×25+75％×21.4）÷200178.6-0.786×25+75％×21.4）÷2001（78.6-0.786×25+7
78.6-0.786×25+75％×21.4）÷2001
78.6-0.786×25+75％×21.4）÷2001
78.6-0.786×25+75％×21.4）÷2001
（78.6-0.786×25+75％×21.4）÷2001
=（78.6-78.6×0.25+75％×21.4）÷2001
=（78.6×0.75+0.75×21.4）÷2001
=（(78.6+21.4）×0.75）÷2001
=（100×0.75）÷2001
=75/2001
=25/667
667/25约等于0.03748
(78.6-0.786*25+75%*21.4)/15*1997
(78.6-0.786/25+75%/21.4)*15/2011
78.6—0.786*25+75%*21.4
(78.6-0.786*25+75%*21.4)/15*2011
(78.6－0.786×25＋75%×21.4)÷15×1997
(78.6-0.786*25+75%*21.4)/15*20的简算
(78.6-0.786*25+75%*21.4)*1997 如何计算?
78.6-0.786×25+75％×21.4）÷2001
简便运算（78.6—0.786×25+75%×21.4）÷15×2001
.（78.6—0.786×25+75%×21.4）÷15×2001=
(78.6——0.786乘以25+75%乘以21.4）除以15乘2001快
(78.6-0.786*25+0.75*21.4)/15*1997
(78.6-0.786*25+0.75*21.4)/15*1999
（78.6-0.786*25+0.75*21.4）/15*2001
简算(78.6-0.786*25+0.75*21.4)/15*2003
（78.6-0.786*25+0.75*21.4)除15*2001咋写？简便
78.6-0.786*25+0.75*21.4请大家看好题在回答,我没有/15*2001
78.6+0.214*25+75%*21.4简便计算