作业帮关于七年级上册整式的加减计算题,越多越好
来源：学生作业帮 编辑：作业帮 分类：数学作业 时间：2024/05/06 05:08:43
关于七年级上册整式的加减计算题,越多越好
快!急!可以不要答案!谢谢了!
快!急!可以不要答案!谢谢了!
3ab-4ab+8ab-7ab+ab=______．
4．7x-(5x-5y)-y=______．
5．23a3bc2-15ab2c+8abc-24a3bc2-8abc=______．
6．-7x2+6x+13x2-4x-5x2=______．
7．2y+(-2y+5)-(3y+2)＝______．
11．(2x2-3xy+4y2)+(x2+2xy-3y2)=______．
12．2a-(3a-2b+2)+(3a-4b-1)=______．
13．-6x2-7x2+15x2-2x2＝______．
14．2x-(x+3y)-(-x-y)-(x-y)＝______．
16．2x+2y-[3x-2(x-y)]=______．
17．5-(1-x)-1-(x-1)=______．
18．( )+(4xy+7x2-y2)=10x2-xy．
19．(4xy2-2x2y)-( )=x3-2x2y+4xy2+y3．
21．已知A=x3-2x2+x-4,B=2x3-5x+3,计算A+B=______．
22．已知A=x3-2x2+x-4,B=2x3-5x+3,计算A-B=______．
23．若a=-0.2,b=0.5,代数式-(|a2b|-|ab2|)的值为______．
25．一个多项式减去3m4-m3-2m+5得-2m4-3m3-2m2-1,那么这个多项式等于______．
26．-(2x2-y2)-[2y2-(x2+2xy)]=______．
27．若-3a3b2与5ax-1by+2是同类项,则x=______,y=______．
28．(-y+6+3y4-y3)-(2y2-3y3+y4-7)＝______．
29．化简代数式4x2-[7x2-5x-3(1-2x+x2)]的结果是______．
30．2a-b2+c-d3=2a+( )-d3=2a-d3-( )=c-( )．
31．3a-(2a-3b)+3(a-2b)-b=______．
32．化简代数式x-[y-2x-(x+y)]等于______．
33．[5a2+( )a-7]+[( )a2-4a+( )]=a2+2a+1．
34．3x-[y-(2x+y)]=______．
35．化简|1-x+y|-|x-y|(其中x＜0,y＞0)等于______．
36．已知x≤y,x+y-|x-y|=______．
37．已知x＜0,y＜0,化简|x+y|-|5-x-y|=______．
38．4a2n-an-(3an-2a2n)＝______．
39．若一个多项式加上-3x2y+2x2-3xy-4得
2x2y+3xy2-x2+2xy,
则这个多项式为______．
40．-5xm-xm-(-7xm)+(-3xm)=______．
41．当a=-1,b=-2时,
[a-(b-c)]-[-b-(-c-a)]＝______．
43．当a=-1,b=1,c=-1时,
-[b-2(-5a)]-(-3b+5c)＝______．
44．-2(3x+z)-(-6x)+(-5y+3z)=______．
45．-5an-an+1-(-7an+1)+(-3an)＝______．
46．3a-(2a-4b-6c)+3(-2c+2b)=______．
48．9a2+[7a2-2a-(-a2+3a)]=______．
50．当2y-x=5时,5(x-2y)2-3(-x+2y)-100=______．
．(4x2-8x+5)-(x3+3x2-6x+2)．
72．(0.3x3-x2y+xy2-y3)-(-0.5x3-x2y+0.3xy2)．
73．-{2a2b-[3abc-(4ab2-a2b)]｝．
74．(5a2b+3a2b2-ab2)-(-2ab2+3a2b2+a2b)．
75．(x2-2y2-z2)-(-y2+3x2-z2)+(5x2-y2+2z2)．
76．(3a6-a4+2a5-4a3-1)-(2-a+a3-a5-a4)．
77．(4a-2b-c)-5a-[8b-2c-(a+b)]．
78．(2m-3n)-(3m-2n)+(5n+m)．
79．(3a2-4ab-5b2)-(2b2-5a2+2ab)-(-6ab)．
80．xy-(2xy-3z)+(3xy-4z)．
81．(-3x3+2x2-5x+1)-(5-6x-x2+x3)．
83．3x-(2x-4y-6x)+3(-2z+2y)．
84．(-x2+4+3x4-x3)-(x2+2x-x4-5)．
85．若A=5a2-2ab+3b2,B=-2b2+3ab-a2,计算A+B．
86．已知A=3a2-5a-12,B=2a2+3a-4,求2(A-B)．
87．2m-{-3n+[-4m-(3m-n)]｝．
88．5m2n+(-2m2n)+2mn2-(+m2n)．
89．4(x-y+z)-2(x+y-z)-3(-x-y-z)．
90．2(x2-2xy+y2-3)+(-x2+y2)-(x2+2xy+y2)．
92．2(a2-ab-b2)-3(4a-2b)+2(7a2-4ab+b2)．
93.2x2-｛-3x-[4x2-(3x2-x)+(x-x2)]｝．
94：-(7x-y-2z)-｛[4x-(x-y-z)-3x+z]-x｝．
95：(+3a)+(-5a)+(-7a)+(-31a)-(+4a)-(-8a)．
96：a3-(a2-a)+(a2-a+1)-(1-a4+a3)．
97．4x-2(x-3)-3[x-3(4-2x)+8]．
再问： 能不能再多一点？
再答： 先做着吧，做完再弄。望采纳。谢谢 2x－3y）+（5x+4y） （8a－7b）－（4a－5b） －（3x－2y + z）－[5x－(x－2y +z ) －3x] 2（7x2+5x－3）－3（5x2－3x+2） 2b3 +（3ab3－a2b）－2（ab2 + b3） （－6x2+5xy）－12xy－（2x2－9xy） （x2－2x3 +1）－(－1+2x3 + 2x2)，其中x=2 3a－[－2b+（4a－3b）]，其中a=－1，b=3 3ab-4ab+8ab-7ab+ab= 7x-(5x-5y)-y= 23a3bc2-15ab2c+8abc-24a3bc2-8abc= -7x2+6x+13x2-4x-5x2= 2y+(-2y+5)-(3y+2)＝ (2x2-3xy+4y2)+(x2+2xy-3y2)= 2a-(3a-2b+2)+(3a-4b-1)= -6x2-7x2+15x2-2x2＝ 2x-(x+3y)-(-x-y)-(x-y)＝ 2x+2y-[3x-2(x-y)]= 5-(1-x)-1-(x-1)= 已知A=x3-2x2+x-4，B=2x3-5x+3，计算A+B= 若a=-0.2，b=0.5，代数式-(|a2b|-|ab2|)的值为 -(2x2-y2)-[2y2-(x2+2xy)]= (-y+6+3y4-y3)-(2y2-3y3+y4-7)＝ 4x2-[7x2-5x-3(1-2x+x2)]= 3a-(2a-3b)+3(a-2b)-b= x-[y-2x-(x+y)] = 3x-[y-(2x+y)]= 4a2n-an-(3an-2a2n)＝ 2x2y+3xy2-x2+2xy= -5xm-xm-(-7xm)+(-3xm)= 当a=-1，b=-2时， [a-(b-c)]-[-b-(-c-a)]＝ 当a=-1，b=1，c=-1时， -[b-2(-5a)]-(-3b+5c)＝ -2(3x+z)-(-6x)+(-5y+3z)= -5an-an+1-(-7an+1)+(-3an)＝ 3a-(2a-4b-6c)+3(-2c+2b)= 9a2+[7a2-2a-(-a2+3a)]= 当2y-x=5时，5(x-2y)2-3(-x+2y)-100=
4．7x-(5x-5y)-y=______．
5．23a3bc2-15ab2c+8abc-24a3bc2-8abc=______．
6．-7x2+6x+13x2-4x-5x2=______．
7．2y+(-2y+5)-(3y+2)＝______．
11．(2x2-3xy+4y2)+(x2+2xy-3y2)=______．
12．2a-(3a-2b+2)+(3a-4b-1)=______．
13．-6x2-7x2+15x2-2x2＝______．
14．2x-(x+3y)-(-x-y)-(x-y)＝______．
16．2x+2y-[3x-2(x-y)]=______．
17．5-(1-x)-1-(x-1)=______．
18．( )+(4xy+7x2-y2)=10x2-xy．
19．(4xy2-2x2y)-( )=x3-2x2y+4xy2+y3．
21．已知A=x3-2x2+x-4,B=2x3-5x+3,计算A+B=______．
22．已知A=x3-2x2+x-4,B=2x3-5x+3,计算A-B=______．
23．若a=-0.2,b=0.5,代数式-(|a2b|-|ab2|)的值为______．
25．一个多项式减去3m4-m3-2m+5得-2m4-3m3-2m2-1,那么这个多项式等于______．
26．-(2x2-y2)-[2y2-(x2+2xy)]=______．
27．若-3a3b2与5ax-1by+2是同类项,则x=______,y=______．
28．(-y+6+3y4-y3)-(2y2-3y3+y4-7)＝______．
29．化简代数式4x2-[7x2-5x-3(1-2x+x2)]的结果是______．
30．2a-b2+c-d3=2a+( )-d3=2a-d3-( )=c-( )．
31．3a-(2a-3b)+3(a-2b)-b=______．
32．化简代数式x-[y-2x-(x+y)]等于______．
33．[5a2+( )a-7]+[( )a2-4a+( )]=a2+2a+1．
34．3x-[y-(2x+y)]=______．
35．化简|1-x+y|-|x-y|(其中x＜0,y＞0)等于______．
36．已知x≤y,x+y-|x-y|=______．
37．已知x＜0,y＜0,化简|x+y|-|5-x-y|=______．
38．4a2n-an-(3an-2a2n)＝______．
39．若一个多项式加上-3x2y+2x2-3xy-4得
2x2y+3xy2-x2+2xy,
则这个多项式为______．
40．-5xm-xm-(-7xm)+(-3xm)=______．
41．当a=-1,b=-2时,
[a-(b-c)]-[-b-(-c-a)]＝______．
43．当a=-1,b=1,c=-1时,
-[b-2(-5a)]-(-3b+5c)＝______．
44．-2(3x+z)-(-6x)+(-5y+3z)=______．
45．-5an-an+1-(-7an+1)+(-3an)＝______．
46．3a-(2a-4b-6c)+3(-2c+2b)=______．
48．9a2+[7a2-2a-(-a2+3a)]=______．
50．当2y-x=5时,5(x-2y)2-3(-x+2y)-100=______．
．(4x2-8x+5)-(x3+3x2-6x+2)．
72．(0.3x3-x2y+xy2-y3)-(-0.5x3-x2y+0.3xy2)．
73．-{2a2b-[3abc-(4ab2-a2b)]｝．
74．(5a2b+3a2b2-ab2)-(-2ab2+3a2b2+a2b)．
75．(x2-2y2-z2)-(-y2+3x2-z2)+(5x2-y2+2z2)．
76．(3a6-a4+2a5-4a3-1)-(2-a+a3-a5-a4)．
77．(4a-2b-c)-5a-[8b-2c-(a+b)]．
78．(2m-3n)-(3m-2n)+(5n+m)．
79．(3a2-4ab-5b2)-(2b2-5a2+2ab)-(-6ab)．
80．xy-(2xy-3z)+(3xy-4z)．
81．(-3x3+2x2-5x+1)-(5-6x-x2+x3)．
83．3x-(2x-4y-6x)+3(-2z+2y)．
84．(-x2+4+3x4-x3)-(x2+2x-x4-5)．
85．若A=5a2-2ab+3b2,B=-2b2+3ab-a2,计算A+B．
86．已知A=3a2-5a-12,B=2a2+3a-4,求2(A-B)．
87．2m-{-3n+[-4m-(3m-n)]｝．
88．5m2n+(-2m2n)+2mn2-(+m2n)．
89．4(x-y+z)-2(x+y-z)-3(-x-y-z)．
90．2(x2-2xy+y2-3)+(-x2+y2)-(x2+2xy+y2)．
92．2(a2-ab-b2)-3(4a-2b)+2(7a2-4ab+b2)．
93.2x2-｛-3x-[4x2-(3x2-x)+(x-x2)]｝．
94：-(7x-y-2z)-｛[4x-(x-y-z)-3x+z]-x｝．
95：(+3a)+(-5a)+(-7a)+(-31a)-(+4a)-(-8a)．
96：a3-(a2-a)+(a2-a+1)-(1-a4+a3)．
97．4x-2(x-3)-3[x-3(4-2x)+8]．
再问： 能不能再多一点？
再答： 先做着吧，做完再弄。望采纳。谢谢 2x－3y）+（5x+4y） （8a－7b）－（4a－5b） －（3x－2y + z）－[5x－(x－2y +z ) －3x] 2（7x2+5x－3）－3（5x2－3x+2） 2b3 +（3ab3－a2b）－2（ab2 + b3） （－6x2+5xy）－12xy－（2x2－9xy） （x2－2x3 +1）－(－1+2x3 + 2x2)，其中x=2 3a－[－2b+（4a－3b）]，其中a=－1，b=3 3ab-4ab+8ab-7ab+ab= 7x-(5x-5y)-y= 23a3bc2-15ab2c+8abc-24a3bc2-8abc= -7x2+6x+13x2-4x-5x2= 2y+(-2y+5)-(3y+2)＝ (2x2-3xy+4y2)+(x2+2xy-3y2)= 2a-(3a-2b+2)+(3a-4b-1)= -6x2-7x2+15x2-2x2＝ 2x-(x+3y)-(-x-y)-(x-y)＝ 2x+2y-[3x-2(x-y)]= 5-(1-x)-1-(x-1)= 已知A=x3-2x2+x-4，B=2x3-5x+3，计算A+B= 若a=-0.2，b=0.5，代数式-(|a2b|-|ab2|)的值为 -(2x2-y2)-[2y2-(x2+2xy)]= (-y+6+3y4-y3)-(2y2-3y3+y4-7)＝ 4x2-[7x2-5x-3(1-2x+x2)]= 3a-(2a-3b)+3(a-2b)-b= x-[y-2x-(x+y)] = 3x-[y-(2x+y)]= 4a2n-an-(3an-2a2n)＝ 2x2y+3xy2-x2+2xy= -5xm-xm-(-7xm)+(-3xm)= 当a=-1，b=-2时， [a-(b-c)]-[-b-(-c-a)]＝ 当a=-1，b=1，c=-1时， -[b-2(-5a)]-(-3b+5c)＝ -2(3x+z)-(-6x)+(-5y+3z)= -5an-an+1-(-7an+1)+(-3an)＝ 3a-(2a-4b-6c)+3(-2c+2b)= 9a2+[7a2-2a-(-a2+3a)]= 当2y-x=5时，5(x-2y)2-3(-x+2y)-100=