2x-6除以4-4x 4x2
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题是这样的不,x/4+2x/3+x/2=51去分母得:3x+8x+6x=712x=612/17x=36
X除以1*2+x除以2*3+x除以3*4+...+x除以2005*2006=X除以1-X除以2+X除以2-X除以3……-X除以2005+X除以2005-X除以2006=X除以1-X除以2006=200
28/9,不知道对不对,转换成乘法做
原式=[2(x-3)/(x-2)²]÷(x+3)×(x+3)(x-2)/[-(x-3)]=-2(x-3)(x+3)(x-2)/[(x-2)²(x+3)(x-3)]=-2/(x-2)
((x+2)/(x^2-2x)-(x-1)/(x^2-4x+4))/((x^2-16)/(x^2+4x))=((x+2)(x-2)-(x-1)x)/((x-2)^2*x)/((x-4)/x)=((x-
(2x-6)/(X平方-4x+4)×(2x-4)/(x-3)=4(x-3)(x-2)/(x-2)平方(x-3)=4/(x-2)如果不懂,请追问,祝学习愉快!
(2x-6)除以(X平方-4x+4)除以(x+3)乘以(x平方+x-6)除以(12-4x)=2(x-3)/(x-2)^2/(x+3)*(x+3)(x-2)/4(3-x)=-2(x-3)/[(x-2)^
1/(x-1)+1/(x-4)-[1/(x-2)+1/(x-3)]=0通分(2x-5)/(x²-5x+4)-(2x-5)/(x²-5x+6)=0(2x-5)[1/(x²-
再答:答案1/4
x/2+x/3+x/4=6x/12+4x/12+3x/12=13x/12=65所以x=65除以13/12=60
3-1除以3x-1=4除以6x-23-1/(3x-1)=2/(3x-1)两边同乘以(3x-1)得:3(3x-1)-1=23x-1=13x=2x=2/3
答:6/x=(1/2)/(1/5)6/x=5/25x=12x=12/5经检验,是原分式方程的根0.2/25=4/x所以:0.2x=4*250.2x=100x=500经检验,是原分式方程的根
原式=1÷(2÷3)÷(3÷4)÷(4÷5)÷(5÷6)=1÷2×3÷3×4÷4×5÷5×6=1÷2×(3÷3)×(4÷4)×(5÷5)×6=1÷2×6=0.5×6=3
经化简得(x+4)(x+7)=(x+5)(x+6)无解!再问:怎么能把1约掉再答:通分啊!两边就消去了!再问:怎么通分,具体步骤再答:上传了,你可以看看具体步骤再问:哪上传了再问:就是上面的吗再答:你
化成小数0.25x+0.4x=1.30.65x=1.3x=1.3÷0.65x=2
别忽略了分数线的作用,原来的分子分母分开写上下两行,输入电脑就要加括号啊[(2x-6)/(x"-4x+4)]/[(12-4x)/(x"+5x-6)]/[(x"+5x+6)/(x"-5x-6)]=[(2
1/(5-x)+2/(4-x)+3/(3-x)=-31/(5-x)+2/(4-x)=3/(x-3)-3[(4-x)+2(5-x)]/[(5-x)(4-x)]=[3-3(x-3)]/(x-3)(14-3
7/(x²+x)+4/(x²-x)=6/(x²-1)都乘以x(x+1)(x-1)得:7(x-1)+4(x+1)=6x解得:x=3/5
x除以0.05除以2=(4500-x)除以0.02除以4化简成8x=10(4500-x)是对的,8x=45000-10x18x=45000x=2500
共有5种算法:1/(2/3)/4/(5/6/7/8)/9=2.81/(2/(3/4))/(5/6/7/8)/9=2.81/(2/(3/4/5)/6/7/(8/9))=2.81/(2/(3/4/(5/6