-3-4+19-11+2

来源:学生作业帮助网 编辑:六六作业网 时间:2024/05/16 19:28:15
-3-4+19-11+2-3-4+19-11+2-3-4+19-11+2-3-4+19-11+2=(19+2)-(3+4+11)=21-18=3-3-4+19-11+2=3...-3-4+19-11+

-3-4+19-11+2
-3-4+19-11+2

-3-4+19-11+2
-3-4+19-11+2
=(19+2)-(3+4+11)=21-18=3

-3-4+19-11+2=3...

-3-4+19-11+2
=-18+21
=3

-3-4+19-11+2
=(19+2)-(3+4+11)
=21-18
=3