(13)计算:8.1×1.3-8/1.3+1.9×1.3+11.9/1.3

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/09 17:16:47

(13)计算:8.1×1.3-8/1.3+1.9×1.3+11.9/1.3
(13)计算:8.1×1.3-8/1.3+1.9×1.3+11.9/1.3

(13)计算:8.1×1.3-8/1.3+1.9×1.3+11.9/1.3
8.1×1.3-8/1.3+1.9×1.3+11.9/1.3
=1.3×(8.1+1.9)+(-8+11.9)/1.3
=13+3
=16

这也忒简单了吧。
8.1×1.3-8/1.3+1.9×1.3+11.9/1.3
原式=1.3×(8.1+1.9)+(-8+11.9)/1.3
=13+3
=16
我做过这到题的,错了你找我!!