x-1/x-2=1/2-x-3/2怎么做?

(x-1)(x+2)(x+3)(x+6)怎么做? x-1/x-2-x-3/x-4=x-2/x-3-x-4/x-5怎么做? 3[x-2(x-1)]=9x怎么做 (2x+3)(-x-1)怎么做 (2x+3)(-x-1)怎么做 2(x-3)(-x+1)怎么做 1/(1-x)+1/(1+x)+2/(1+x*x)+4/(1+x*x*x*x)+8/(1-x*x*x*x*x*x*x*x)怎么做 x/x-1+2=5/x-1怎么做? (x-1)(x-2)(x+3)怎么做 (X-1)(x-2)(x-3)怎么做呀? 3分之x-1=5分之x+2+x 怎么做? 怎么做? 1/（x+2)+1/(x+3)=1/(x+1)+1/(x+4)怎么做 [3-2x/1-x]-1=[x+2/x-3]怎么做 数学分式方程3/(x-1)(x+2)=x-1/x-1怎么做? (3/x+2)+1/x=4/x²+2x这道题怎么做 2x/(x^2+x)-1/x=5/(x+1)怎么做?急! 3(2x+1)=2(5-x)怎么做 4(X+1)-3=2(x-2)怎么做