(-5/12-1/24-5/6)*(24*5/9-24*2/9+24*2/3)

来源:学生作业学帮网 编辑:学帮网 时间:2024/05/30 23:24:03

(-5/12-1/24-5/6)*(24*5/9-24*2/9+24*2/3)

=(-10/24-1/24-20/24)*(24*(5/9-2/9+2/3))=-31/24*24=-31