还是数学题.郁闷
问题描述：
还是数学题.郁闷
23又9/11+（—63.21）+26又2/11+(-39.79)
答
23又9/11+（—63.21）+26又2/11+(-39.79)
=23又9/11++26又2/11-（63.11+39.79)
=50-103
=-53