数字有误修改为
(-47.65)*28/11+(-37.15)*(-28/11)+10.5*(-28/11)
=（-47.65+37.15-10.5）×28/11
=-21×28/11
=-4/33
=-8.25不是,,要是这样我就不问了- -,, 这道题就是这样的,,,(-47.65)*28/11+(-37.15)*(-28/11)+10.5*(-82/11) =（-47.65+37.15）×28/11-10.5×（-82/11）=-10.5×28/11-10.5×82/11=-10.5×（28+82）/11=-10.5×110/11=-10.5×10=-105