1.x+9/x+8- x+10/x+9=x+6/x+5- x+7/x+6;
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
练习册---1.X+1=1/2X-12.2(X-5)=3(5X+1)-333.9X-3(X-2)=6X+25.5X/24
解下列方程..1.(x/x-5)=(x-2)/(x-3)2.(6x-1)/(3x+2)=(4x-7)/(2x-5)3.{
2x+3x+4x+5x+x+6x+7x=100
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
x-4/x-5 - x-5/x-6=x-7/x-8 - x-8/x-9求x=?
(X-5)(X-6)=X-5
已知3x*x-x=1,求6x*x*x+7x*x-5x+2000
1.x^2-9=0,则(x^2-5x+6)/(x-3)的值?
1.解方程:1/(x+5)+1/(x+8)=1/(x+6)+1/(x+7)
6/x+1=x-5/x^2+x