(78.6-0.786*25+75%*21.4)/15*2011
=（78.6-78.6x0.25+0.75x21.4）÷15x2011
=[78.6x(1-0.25)+0.75x21.4]÷15x2011
=(78.6x0.75+0.75x21.4)÷15x2011
=0.75x(78.6+21.4)÷15x2011
=0.75x100÷15x2011
=5x2011
=10055
(78.6-0.786/25+75%/21.4)*15/2011
1个回答
相关问题
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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)*1997 如何计算?
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78.6-0.786×25+75％×21.4）÷2001
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21比（）=（）/36=0.75=15比（）=（）75%