(x-x-3分之x-4)除x-3分之x2-4-搜答案-智慧作业帮

[(x-4)/(x^2-1)]÷[(x^2-3x-4)/(x^2+2x+1)]+1/(x-1)=[(x-4)/(x+1)(x-1)]÷[(x-4)(x+1)/(x+1)^2]+1/(x-1)=[(x-

原式=(x²-2x)/(x²-4)÷[x-2-(2x-4)/(x+2)]=x(x-2)/[(x-2)(x+2)]÷[(x-2)(x+2)/(x+2)-2(x-2)/(x+2)]=x

解1题：5x=15/19x=15/19÷5x=15/19×1/5x=3/19解2题(8/21)x=4/15x=4/15÷(8/21)x=4/15×21/8x=7/10解3题x÷(4/5)=15/28x

原式=(x^2+3x)/(x^2+x-6)-(x+2)/(x^2-4)=x(x+3)/(x+3)*(x-2)-(x+2)/(x+2)*(x-2)=x/(x-2)-1/(x-2)=(x-1)/(x-2)

(x-1分之x-x+1分之x)除与1-x分之2x=[x/(x-1)-x/(x+1)]÷2x/(1-x)={[x(x+1)-x(x-1)]/(x+1)(x-1)}÷2x/(1-x)=2x/(x+1)(x

原式=[(1-1分之x+5)-(1-1分之x+4))+(1-1分之x+3)-(1-1分之x+2)]*[(x+3)(x+5)]\(x^2+7x+13)=[(1分之x+2)-(1分之x+3)+(1分之x+

4分之3除x=2分之1

楼主说的除指的是除以吧?3/4x=1/2x=(3/4)/(1/2)=3/2

18.4÷x=12x=8.4÷12x=0.72x-1/4x=1/23/4x=1/2x=1/2÷3/4x=2/33x÷2.55=1x=2.55x1x=2.55如果本题有什么不明白可以追问,

[(x-2)分之3x-(x+2)分之x]乘x分之(x²-4)=[(x-2)分之3x]乘x分之(x²-4)-[(x+2)分之x]乘x分之(x²-4)=3(x+2)-(x-2

[x+1-15/(x-1)]÷[(x^2-4x)/(x^2-x)]=[(x^2-1-15)/(x-1)]÷[x(x-4)/x(x-1)]=[(x^2-16)/(x-1)]÷[(x-4)/(x-1)]=

原式=[(x+2)/x(x-2)-(x-1)/(x-2)²]*x/(x²-4)=[(x+2)(x-2)-x(x-1)]/x(x-2)²*x/(x+2)(x-2)=(x&#

x÷9分之4=3分之一x=1/3×4/9x=4/276分之5x+75%=45/6x=3.25x=3.97-50%x=50.5x=2x=4

不知道你题目是不是有问题这句话应该为(1/16)/(5x/12)=x/3整理x^2=9/20

原式=2(x-3)/(x-2)²*1/(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÷x²+3x+2=2x+2-x÷x²+2x+1=x+1-1÷3x+6=?

答；把x带进去,317/24

再答：谢谢😊再问：还有再答：说再问：再问：谢了再答：等一下啊再答：再答：再答：好了再问：^_^再答：不客气

答：(4/5)x=3/10x=(3/10)*(5/4)x=3/8x=8分之3(3/10)/x=4/5x=(3/10)/(4/5)x=(3/10)*(5/4)x=3/8x=8分之3

原式=[（x+2）/x（x-2）-（x-1）/（x-2）²]÷（4-x）/x=[（x+2）（x-2）/x（x-2）²-x（x-1）/x（x-2）²]÷（4-x）/x=[（