(78.6-0,786*25+75%*21.4)/15*1997简算

问题描述:

(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.
【希望可以帮到你】这是最简单的,普通的比这个还多,你明天去问问你们老师,不对我就去死~(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.