-13×2/3-0.34×2/7+(-13)-5/7×0.34简便运算

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/27 22:53:10
-13×2/3-0.34×2/7+(-13)-5/7×0.34简便运算

-13×2/3-0.34×2/7+(-13)-5/7×0.34简便运算
-13×2/3-0.34×2/7+(-13)-5/7×0.34简便运算

-13×2/3-0.34×2/7+(-13)-5/7×0.34简便运算
﹣13×2/3-0.34×2/7+﹙﹣13﹚-5/7×0.34
=﹙﹣13﹚×2/3+﹙﹣13﹚-0.34×2/7-5/7×0.34
=﹙﹣13﹚×﹙2/3+1﹚-0.34×﹙2/7+5/7﹚
=﹙﹣13﹚×5/3-0.34×1
=﹣65/3-17/50
=﹣3301/150
等于负150分之3301