(78.6-0,786*25+75%*21.4)/15*1997简算

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(78.6-0,786*25+75%*21.4)/15*1997简算
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(78.6-0,786*25+75%*21.4)/15*1997简算
(78.6-0,786*25+75%*21.4)/15*1997简算

(78.6-0,786*25+75%*21.4)/15*1997简算
(78.6-0.786×25十75%×21.4)÷15×1997
=(78.6-19.65+0.75×21.4)÷15×(2000-3)
=(78.6-19.65+16.05)÷15×(2000-3)
=(58.95+16.05)÷15×(2000-3)
=75÷15×(2000-3)
=5×(2000-3)
=5×2000-5×3
=10000-15
=9985.
答案为:9985.
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(78.6-0,786*25+75%*21.4)/15*1997
=(78.6-78.6*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
=75/15*1997
=5*1997
=9985

(78.6-0,786*25+75%*21.4)/15*1997
=(78.6-78.6*25/100+3*21.4/4)/15*1997
=(78.6-78.6/4+78.6/4)/15*1997
=78.6/15*1997
=78.6*1997/15
=(78.6*2000-3)/15
=78.6*400/3-78.6/5
=26.3*4...

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(78.6-0,786*25+75%*21.4)/15*1997
=(78.6-78.6*25/100+3*21.4/4)/15*1997
=(78.6-78.6/4+78.6/4)/15*1997
=78.6/15*1997
=78.6*1997/15
=(78.6*2000-3)/15
=78.6*400/3-78.6/5
=26.3*400-78.6/5
下来直接计算就是
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