(7a-2b)-【6a-(5b-2c)】+2c=

来源:学生作业帮助网 编辑:六六作业网 时间:2024/08/12 12:21:55
(7a-2b)-【6a-(5b-2c)】+2c=(7a-2b)-【6a-(5b-2c)】+2c=(7a-2b)-【6a-(5b-2c)】+2c=(7a-2b)-【6a-(5b-2c)】+2c=7a-2

(7a-2b)-【6a-(5b-2c)】+2c=
(7a-2b)-【6a-(5b-2c)】+2c=

(7a-2b)-【6a-(5b-2c)】+2c=
(7a-2b)-【6a-(5b-2c)】+2c
=7a-2b-6a+5b-2c+2c
=a+3b