1.(4x-3y)-[2(x-1)+2y-3] 2.(2a-5b)-{-3b-2[4a-2(3a-b)}1.(4x-3y)-[2(x-1)+2y-3]2.(2a-5b)-{-3b-2[4a-2(3a-b)}
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/08 06:48:20
![1.(4x-3y)-[2(x-1)+2y-3] 2.(2a-5b)-{-3b-2[4a-2(3a-b)}1.(4x-3y)-[2(x-1)+2y-3]2.(2a-5b)-{-3b-2[4a-2(3a-b)}](/uploads/image/z/1033550-62-0.jpg?t=1.%EF%BC%884x-3y%29-%5B2%EF%BC%88x-1%EF%BC%89%2B2y-3%5D+2.%282a-5b%29-%7B-3b-2%5B4a-2%EF%BC%883a-b%EF%BC%89%EF%BD%9D1.%EF%BC%884x-3y%29-%5B2%EF%BC%88x-1%EF%BC%89%2B2y-3%5D2.%282a-5b%29-%7B-3b-2%5B4a-2%EF%BC%883a-b%EF%BC%89%EF%BD%9D)
1.(4x-3y)-[2(x-1)+2y-3] 2.(2a-5b)-{-3b-2[4a-2(3a-b)}1.(4x-3y)-[2(x-1)+2y-3]2.(2a-5b)-{-3b-2[4a-2(3a-b)}
1.(4x-3y)-[2(x-1)+2y-3] 2.(2a-5b)-{-3b-2[4a-2(3a-b)}
1.(4x-3y)-[2(x-1)+2y-3]
2.(2a-5b)-{-3b-2[4a-2(3a-b)}
1.(4x-3y)-[2(x-1)+2y-3] 2.(2a-5b)-{-3b-2[4a-2(3a-b)}1.(4x-3y)-[2(x-1)+2y-3]2.(2a-5b)-{-3b-2[4a-2(3a-b)}
1.(4x-3y)-[2(x-1)+2y-3]=4x-3y-(2x-2+2y-3)=4x-3y-(2x+2y-5)=4x-3y-2x-2y+5=2x-5y+5
2.(2a-5b)-{-3b-2[4a-2(3a-b)}=2a-5b-[-3b-2(4a-6a+2b)]=2a-5b-[-3b-2(-2a+2b)]=2a-5b-(-3b+4a-4b)=2a-5b-(4a-7b)=2a-5b+4a+7b=6a +2b
(4x-3y)-[2(x-1)+2y-3]
=4x-3y-2x+2-2y+3
=2x-5y+5
(2a-5b)-{-3b-2[4a-2(3a-b)}
=2a-5b-{-3b-2[-2a+2b}
=2a-5b-{-3b+4a-4b}
=2a-5b+3b-4a+4b
=-2a+2b
1.(4x-3y)-[2(x-1)+2y-3]
=4x-3y-(2x-2+2y-3)
=4x-3y-(2x+2y-5)
=4x-3y-2x-2y+5
=2x-5y+3
2.(2a-5b)-{-3b-2[4a-2(3a-b)}
=2a-5b-[-3b-2(4a-6a+2b)]
=2a-5b-[-3b-2(-2a+2b)]
=2a-5b-...
全部展开
1.(4x-3y)-[2(x-1)+2y-3]
=4x-3y-(2x-2+2y-3)
=4x-3y-(2x+2y-5)
=4x-3y-2x-2y+5
=2x-5y+3
2.(2a-5b)-{-3b-2[4a-2(3a-b)}
=2a-5b-[-3b-2(4a-6a+2b)]
=2a-5b-[-3b-2(-2a+2b)]
=2a-5b-(-3b+4a-2b)
=2a-5b-(4a-5b)
=2a-5b+4a+5b
=6a
收起