(1) -(2m-3) (2) n-3(4-2m) (3) 16a-8(3b+4c)(4) t+2/3(12-9v) (5)-(5m+n)-7(a-3b) (6)-1/2(X+Y)+1/4(p+q)(7)-8(3a-2ab+4) (8)4(m+p)-7(n-2q)-----------------------------------------------------------请把过程写上.如果对这些很拿手的人,请告诉
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/04 23:12:35
![(1) -(2m-3) (2) n-3(4-2m) (3) 16a-8(3b+4c)(4) t+2/3(12-9v) (5)-(5m+n)-7(a-3b) (6)-1/2(X+Y)+1/4(p+q)(7)-8(3a-2ab+4) (8)4(m+p)-7(n-2q)-----------------------------------------------------------请把过程写上.如果对这些很拿手的人,请告诉](/uploads/image/z/876702-30-2.jpg?t=%281%29+-%282m-3%29+%282%29+n-3%284-2m%29+%283%29+16a-8%283b%2B4c%29%284%29+t%2B2%2F3%2812-9v%29+%285%29-%285m%2Bn%29-7%28a-3b%29+%286%29-1%2F2%28X%2BY%29%2B1%2F4%28p%2Bq%29%287%29-8%283a-2ab%2B4%29+%288%294%28m%2Bp%29-7%28n-2q%29-----------------------------------------------------------%E8%AF%B7%E6%8A%8A%E8%BF%87%E7%A8%8B%E5%86%99%E4%B8%8A.%E5%A6%82%E6%9E%9C%E5%AF%B9%E8%BF%99%E4%BA%9B%E5%BE%88%E6%8B%BF%E6%89%8B%E7%9A%84%E4%BA%BA%2C%E8%AF%B7%E5%91%8A%E8%AF%89)
(1) -(2m-3) (2) n-3(4-2m) (3) 16a-8(3b+4c)(4) t+2/3(12-9v) (5)-(5m+n)-7(a-3b) (6)-1/2(X+Y)+1/4(p+q)(7)-8(3a-2ab+4) (8)4(m+p)-7(n-2q)-----------------------------------------------------------请把过程写上.如果对这些很拿手的人,请告诉
(1) -(2m-3) (2) n-3(4-2m) (3) 16a-8(3b+4c)
(4) t+2/3(12-9v) (5)-(5m+n)-7(a-3b) (6)-1/2(X+Y)+1/4(p+q)
(7)-8(3a-2ab+4) (8)4(m+p)-7(n-2q)
-----------------------------------------------------------
请把过程写上.
如果对这些很拿手的人,
请告诉我这麽做这些题.
如果好的话.
都写的很好,
不过请大家把过程补上去好不好.
(1) -(2m-3) (2) n-3(4-2m) (3) 16a-8(3b+4c)(4) t+2/3(12-9v) (5)-(5m+n)-7(a-3b) (6)-1/2(X+Y)+1/4(p+q)(7)-8(3a-2ab+4) (8)4(m+p)-7(n-2q)-----------------------------------------------------------请把过程写上.如果对这些很拿手的人,请告诉
1) -(2m-3)=-2m+3
(2) n-3(4-2m)=n-12+6m
(3) 16a-8(3b+4c)=16a-24b-32c
(4) t+2/3(12-9v)=t+8-6v
(5)-(5m+n)-7(a-3b)=-5m-n-7a+21b
(6)-1/2(X+Y)+1/4(p+q)=-1/2X-1/2Y+1/4P+1/4q
(7)-8(3a-2ab+4)=-24a+16ab-24
(8)4(m+p)-7(n-2q)=4m+4p-7n+14q
把括号打开后,如果括号前面有-好,就相仿与乘以-1,就可以了
1. -2m+3 2. n-12+6m 3. 16a-24b-32c
哎呀我懒的写了。。。做这个题目 只要记住 括号前面是负号 括号里面的数都变号,比如括号里面的数是+的,那么就变-的,如果是负的就变+的。
1:3-2m 2:n-12+6m 3: 16a-24b-32c 4:t+8-6v 5:21b-5m-n-7a 6:1/4p+1/4q-1/2x-1/2y 7:16ab-24a-32 8: 4m+4p+14q-7n