解方程:3x/(xx-1)+(xx-1)/3x=5/2
解方程1/(xx+x)+1/(xx+3x+2)+1/(xx+5x+6)+1/(xx+7x+12)+1/(xx+9x+20
解方程:2-xx-3=1-13-x.
已知:3x=xx-x+1求(xxxx+xx+1)分之xx
解分式方程.(1)2xx+2-3x-2=2
解分式方程(1)2x+1-xx
解分式方程:(1)2xx+3+1=72x+6
已知XX+X+1=0,求XXX+2XX+2X+3的值
帮我做做 初三的题目吧! 2xx-5x+3=0 xx-3x-1=0 5xx=2x+1 2(x+3)(x+3)=3x+19
已知x(x+1)-(xx+y)=3,求(xx+yy)/2-xy的值
x(x+1)-(xx+y)=-3,求(xx+yy)/2-xy的值
解方程 Xx(1-3/4)=(108-X)x(1-80%)
解方程:(2x+3)(x-4)-(x+2)(x-3)=xx+6