[1-(2/3+1/5)*1/13]\7/10

来源：学生作业帮助网编辑：作业帮时间：2024/05/14 04:25:13

$[1-(2/3+1/5)*1/13]\7/10$

[1-(2/3+1/5)*1/13]\7/10
[1-(2/3+1/5)*1/13]\7/10

[1-(2/3+1/5)*1/13]\7/10
[1-(2/3+1/5)*1/13]\7/10
=[1-13/15*1/13]\7/10
=[1-1/15]*10/7
=14/15*10/7
=4/3