Question

不会的.数学题.!

1.去括号
(1)-(2M-3)
(2)n-3(4-2m)
(3)16a-8(3b+4c)
(4)t+3/2(12-9v)
(5)-(5m+n)-7(a-3b)
(6)-2/1(x+y)+4/1(p+q)
(7)-8(3a-2ab+4)
(8)4(m+p)-7(n-2q)
2.化简下列各式.
(1)-2n-(3n-1)
(2)a-(5a-3b)+(2b-q)
(3)-3(2s-5)+6s
(4)1-(2a-1)-(3a+3)
(5)3(-ab+2a)-(3a-b)
(6)14(abc-2a)+3(6a-2abc)
(7)3(xy-2z)+(-xy+3z)
(8)-4(pq+pr)+(4pq+pr)
写清题号 好的加分.. 速度.!

Answer 1

1（1）-（2M-3）=-2M+3 （2）n-3(4-2m)=n-12-6m
(3)16a-8(3b+4c)=16a-24b-32c (4)t+3/2(12-9v)=t+18-13.5v
(5)-(5m+n)-7(a-3b)=-5m-n-7a+21b (6)-2(x+y)+4(p+q)=-2x-2y+4p+4q
(7)-8(3a-2ab+4)=-24a+16ab-32 (8)4(m+p)-7(n-2q)=4m+4p-7n+14q
2 (1)-2n-(3n-1)=-2n-3n-1=-5n-1
(2)a-(5a-3b)+(2b-q)=a-5a+3b+2b-q=-4a+5b-q
(3)-3(2s-5)+6s=-6s+15+6s=15
(4)1-(2a-1)-(3a+3)=1-2a+1-3a-3=-5a-1
(5)3(-ab+2a)-(3a-b)=-3ab+6a-3a+b=-3ab+3a+b
(6)14(abc-2c)+3(6a-2abc)=14abc-28c+18a-6abc=8abc-28c+18a
(7)3(xy-2z)+(-xy+3z)=3xy-6z-xy+3z=2xy-3z
(8)-4(pq+pr)+(4pq+pr)=-4pq-4pr+4pq+pr=-3pr
~\(≥▽≤)/~啦啦啦O(∩_∩)O哈！谢谢我吧

Answer 2

1.
3-2M
n-12+6m
16a-24b-32c
t+8-6v
-5m-n-7a+21b
-2/x-2/y+4/p+4/q
-24a+16ab-32
4m+4p-7n+14q
2.
-5n+1
-4a+5b-q
15
-5a-3
-3ab+3a+b
8abc-6a
2xy-3z
-3pr

Answer 3

1.去括号
(1)-(2M-3)=-2M+3
(2)n-3(4-2m)=n-12+6m
(3)16a-8(3b+4c)=16a-24b-32c
(4)t+3/2(12-9v)=t+18-27/2V
(5)-(5m+n)-7(a-3b)=-5m-n-7a+21b
(6)-2/1(x+y)+4/1(p+q)=-1x-xy+4p+4q
(7)-8(3a-2ab+4)=-24a+16ab-32
(8)4(m+p)-7(n-2q)=4m+4p-7n+14q
2.化简下列各式.
(1)-2n-(3n-1)=-5n+1
(2)a-(5a-3b)+(2b-q)=-4a+5b-q
(3)-3(2s-5)+6s=15
(4)1-(2a-1)-(3a+3)=-1-5a
(5)3(-ab+2a)-(3a-b)=-3ab+3a+b
(6)14(abc-2a)+3(6a-2abc)=8abc-10a
(7)3(xy-2z)+(-xy+3z)=2xy-3z
(8)-4(pq+pr)+(4pq+pr)=-3pr

Answer 4

(1)-2M+3
(2)N-12+6M
(3)16A-24B-32C
(4)T+8-6V
(5)-5M-N-7A+21B
(6)-2/1X-2/1Y+4/1P+4/1Q
(7)-24A+16AB-32
(8)4M+4P-7N+14Q

2..化简
(1)1-5n
(2)5b-4a-q
(3)15
(4)-5a-1
(5)3a-3ab+b
(6)8abc-10a
(7)2xy-3z
(8)-3pr

Answer 5

1.去括号
(12M+3
(2)n-12+6m
(3)16a-24b-32c
(4)t+18-27/2V
(5)-5m-n-7a+21b
(6)-1x-xy+4p+4q
(7)-24a+16ab-32
(8)4m+4p-7n+14q
2.化简下列各式.
(1)-5n+1
(2)-4a+5b-q
(3)15
(4)-1-5a
(5)-3ab+3a+b
(6)8abc-10a
(7)2xy-3z
(8)-3pr
百分之百全对，加分好不好，求你啦。

Answer 6

1.去括号(1)-(2M-3)=-2M+3(2)n-3(4-2m)=n-12+6m(3)16a-8(3b+4c)=16a-24b-32c(4)t+3/2(12-9v)=t+18-27/2V(5)-(5m+n)-7(a-3b)=-5m-n-7a+21b(6)-2/1(x+y)+4/1(p+q)=-1x-xy+4p+4q(7)-8(3a-2ab+4)=-24a+16ab-32(8)4(m+p)-7(n-2q)=4m+4p-7n+14q