(-47.65)28/11+(-37.65)(-28/11)+10.5*(-82/11) 简算要过程.

分类: 作业答案 • 2021-12-31 12:02:18

问题描述：

(-47.65)*28/11+(-37.65)*(-28/11)+10.5*(-82/11) 简算要过程.

答

原式=(-47.65)*28/11+37.65*28/11)+10.5*(-82/11) =﹙﹣47.65＋37.65﹚×28/11+10.5*(-82/11)＝﹣280/11﹣11/2×82/11＝－280/11－41＝﹣731/11

(-47.65)*28/11+(-37.65)*(-28/11)+10.5*(-82/11) 简算 要过程.