合并同类项计算题及答案50道
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例1、合并同类项(1)(3x-5y)-(6x+7y)+(9x-2y)(2)2a-[3b-5a-(3a-5b)](3)(6m2n-5mn2)-6(m2n-mn2)(1)(3x-5y)-(6x+7y)+(
1)(3x-5y)-(6x+7y)+(9x-2y)(2)2a-[3b-5a-(3a-5b)](3)(6m2n-5mn2)-6(m2n-mn2)(1)(3x-5y)-(6x+7y)+(9x-2y)=3x
有理数计算:-201+59+142=058+45-103=04+(-2)=21+(-1)=05+(-3)=2(-5)+(-3)=-8哇,你的这个要求太难了,我有很多题,但是打起来很难,对不起,不能为你
近来管理比较严,诲衣胚贩 啊·
1-1/3[x-(1+x)/3]=x/2-1/2[2x-(10-7x)/3]1-1/3[x-1/3+x/3]=x/2-1/2[2x-10/3+7x/3]1-1/3[4x/3-1/3]=x/2-1/2[
[-|98|+76+(-87)]*23[56+(-75)-(7)]-(8+4+3)5+21*8/2-6-5968/21-8-11*8+61-2/9-7/9-564.6-(-3/4+1.6-4-3/4)
可能不太够(x+5y)-(3y-4x)=x+5y-3y+4x1/2(x6^2-y)+1/3(x-y^2)+(x^2)(^为平方号)10a+6b-7a+3b-10a+10b+12a+8b4xy-2y+3
(1)(3x-5y)-(6x+7y)+(9x-2y)(2)2a-[3b-5a-(3a-5b)](3)(6m2n-5mn2)-6(m2n-mn2)(1)(3x-5y)-(6x+7y)+(9x-2y)=3
(x+5y)-(3y-4x)=x+5y-3y+4x10a+6b-7a+3b-10a+10b+12a+8b4xy-2y+3x-xy(3x-5y)-(6x+7y)+(9x-2y)2a-[3b-5a-(3a
3.3ab-4ab+8ab-7ab+ab=______.4.7x-(5x-5y)-y=______.5.23a3bc2-15ab2c+8abc-24a3bc2-8abc=______.6.-7x2+6
1)(3x-5y)-(6x+7y)+(9x-2y)(2)2a-[3b-5a-(3a-5b)](3)(6m2n-5mn2)-6(m2n-mn2)1)m2+(-mn)-n2+(-m2)-(-0.5n2)(
1.化简:①(2x4―5x2―4x+1)―(3x3―5x2―3x)②―〔―(―x+)〕―(x―1)③―3(x2―2xy+y2)+(2x2―xy―2y2)2.计算:75÷〔138÷(100-54)〕85
看再答:
1.2x+7y-z=24①4x-4y+z=-3②x+y=5③由①+②得:2x+7y-z+4x-4y+z=24-36x+3y=21④得:6x+3y=21④x+y=5③由③得x=5-y⑤把⑤代入④中30-
ab+2ab再问:多一点再答:几道题?再答:2x+3x再问:随你再问:不要太简单的再问:谢谢你再答:3x+4x+3x再答:4a+5a-2a再答:8m-3m+6m再答:4d+5d-2d再问:再难再答:行
例1、合并同类项(1)(3x-5y)-(6x+7y)+(9x-2y)(2)2a-[3b-5a-(3a-5b)](3)(6m2n-5mn2)-6(m2n-mn2)(1)(3x-5y)-(6x+7y)+(
例1、合并同类项(1)(3x-5y)-(6x+7y)+(9x-2y)(2)2a-[3b-5a-(3a-5b)](3)(6m2n-5mn2)-6(m2n-mn2)(1)(3x-5y)-(6x+7y)+(
例1、合并同类项(1)(3x-5y)-(6x+7y)+(9x-2y)(2)2a-[3b-5a-(3a-5b)](3)(6m2n-5mn2)-6(m2n-mn2)(1)(3x-5y)-(6x+7y)+(
先化简,再计算1+(-9)=8+(+20)=78-8+(-92)÷77=87-9+9=1+1-9+8=去括号-(1-9+8-6-3)=-[-(88-99+66+59-77-100)]=82-99-5+
-3(x2-xy)-x(-2y+2x)⑵(-x5)•x3n-1+x3n•(-x)42.(x+2)(y+3)-(x+1)(y-2)⑷(-2m2n)3•mn+(-7m7