(78.6-0.786*25+75%*21.4)/15*1997

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(78.6-0.786*25+75%*21.4)/15*1997
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(78.6-0.786*25+75%*21.4)/15*1997
(78.6-0.786*25+75%*21.4)/15*1997

(78.6-0.786*25+75%*21.4)/15*1997
原式=(78.6-19.65+16.05)/15*1997
=(58.95+16.05)/15*1997
=75/15*1997
=5*1997
=9985

原式=（78.6-78.6×0.25+0.75×21.4）÷15×1997
=[78.6×（1-0.25）+0.75×21.4）]÷15×1997
=[78.6×0.75 +0.75×21.4]÷15×1997
=[78.6+21.4]×0.75÷15×1997
=100×0.75÷15×1997
=5×1997
=5×（2000-3）
=5×2000-15
=9985
请采纳。

(78.6-0.786*25+75%*21.4)/15*1997
=(0.786*100-0.786*25+75%*21.4)/15*1997
=(0.786*75+75%*21.4)/15*1997
=(78.6*75%+75%*21.4)/15*1997
=(100*75%)/15*1997
=75/15*1997
=9985

(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