作业帮[2又1/2-(3/8+1/6-3/4)×24]÷5×(-1)2003次方请求过程
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[2又1/2-(3/8+1/6-3/4)×24]÷5×(-1)2003次方请求过程
[2又1/2-(3/8+1/6-3/4)×24]÷5×(-1)2003次方请求过程
[2又1/2-(3/8+1/6-3/4)×24]÷5×(-1)2003次方请求过程
=[1/2+(-9-4+18)/5]*(-1)
=(1/2+1)*(-1)
=-3/2
原式=[5/2-(3/8*24+1/6*24-3/4*24)]÷5×(-1)
=[5/2-（9+4-18）]÷5×(-1)
=（5/2+5）÷5×(-1)
=（15/2）÷5×(-1)
=-3/2