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七年级上册数学化简题,七年级上册数学化简50道

  • 数学
  • 2023-06-14
目录
  • 七上数学化简求值50道及答案
  • 化简求值题带答案
  • 七年级化简求值题50道带答案
  • 七年级整式化简求值题及答案
  • 初一化简求值100道答案

  • 七上数学化简求值50道及答案

    呵呵运汪埋!答案就旁蚂在这

    1 a+[a+b+c]-[b-a]=3a+c

    2 a×{b+c}-a[b-c]=2ac

    3 {[a÷b]×{b÷a+1]}×{b÷a}=1

    4 a+b-{c×2a}-ac+3[ab+ac}=a+b+3ab

    5 {a+b+c}²+1=a²+b²+c²陵猛+2ab+2ac+2bc+1

    6 {a+b}{a-b}+2a{3b-2b]=a²+b²-2ab

    化简求值题带答案

    3.3ab-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,代数好歼式-(|a2b|-|ab2|)的值为______.

    25.一个多项式友铅冲减去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.激答化简|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=______.

    七年级化简求值题50道带答案

    2(2a�0�5+2ab)-(3a�0�5+4ab-b�0�5)含斗,其中a=2,b=-1

    1/4(a+b)�0�5-6(a-b)+3/4(a+b)�0�5+6(a-b)

    5(a-b)�0�5-3(a-b)�0�5-7(a-b)-(a-b)�0�5+7(a-b)

    1/2a�判缓0�5-1/4b+3/2a�0�5-3/4b-a�0�5

    -5yx�0�5+4xy�0�掘老模5-2xy+6x�0�5y+2xy+5

    16m+25-40m+34m

    (4+2x)+(2x-x)

    4a+8a-(-6a)+3a-2b

    8a+4(a+2)

    (2n-3)+(2n+3)-(2n-3)

    7x-(5x-5y)-y

    3a-4b+4a-3b

    7a+3b-(4a+5b)-3

    3ab-4ab+8ab-7ab+ab

    (x-y)-2(x-y)

    .16m+25-40m+34m

    .(4+2x)+(2x-x)

    4a+8a-(-6a)+3a-2b

    .8a+4(a+2)

    (2n-3)+(2n+3)-(2n-3)

    7x-(5x-5y)-y

    3a-4b+4a-3b

    .7a+3b-(4a+5b)-3

    3ab-4ab+8ab-7ab+ab

    .(x-y)-2(x-y)

    x-[y-2x-(x+y)]

    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)

    10x2-xy.

    x3-2x2y+4xy2+y3.

    4x2-[7x2-5x-3(1-2x+x2)]

    七年级整式化简求值题及答案

    1 a+[a+b+c]-[b-a]=3a+c

    2 a×{b+c}-a[b-c]=2ac

    3 {[a÷b]×{b÷a+1]}×{b÷a}=1

    4 a+b-{c×2a}-ac+3[ab+ac}=a+b+3ab

    5 {a+b+c}²+1=a²皮空+b²+c²+2ab+2ac+2bc+1

    6 {a+b}{a-b}+2a{3b-2b]=a²+b²-2ab

    汗打了脊纤那么长时间终于打出樱握仿来了,给个分数吧

    初一化简求值100道答案

    、-9(x-2)-y(x-5)

    (1)化简整个式子。

    (2)滑模旁当x=5时,求y的解。

    2、5(9+a)×b-5(5+b)×a

    (1)化简信橡整个式子。

    (2)码行当a=5/7时,求式子的值。

    3、62g+62(g+b)-b

    (1)化简整个式子。

    (2)当g=5/7时,求b的解。

    4、3(x+y)-5(4+x)+2y

    (1)化简整个式子。

    5、(x+y)(x-y)

    (1)化简整个式子。

    6、2ab+a×a-b

    (1)化简整个式子。

    7、5.6x+4(x+y)-y

    (1)化简整个式子。

    8、6.4(x+2.9)-y+2(x-y)

    (1)化简整个式子。

    9、(2.5+x)(5.2+y)

    (1)化简整个式子。

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