[1/6-(5/14-1/3)]*7/9 简便运算_数学解答

[1/6-(5/14-1/3)]*7/9 简便运算

人气：261 ℃　时间：2020-02-23 00:38:26

解答

[1/6-(5/14-1/3)]*7/9
=(1/6+1/3-5/14)*7/9
=(1/2-5/14)*7/9
=1/2*7/9-5/14*7/9
=7/18-5/18
=2/18
=1/9