关于七年级上册整式的加减计算题,越多越好

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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].
追问
能不能再多一点?
追答
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=
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