3[x-2(x-1)]=9x怎么做

3[x-2(x-1)]=9x怎么做 x-1/x-2-x-3/x-4=x-2/x-3-x-4/x-5怎么做? (x-1)(x+2)(x+3)(x+6)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 3分之x-1=5分之x+2+x 怎么做? 怎么做? 2(x-2)-3(4x-1)=9(1-x)怎么做过程 (3x+2)(X+3)=x+14怎么做 x/x-1+2=5/x-1怎么做? X(X-4)=3X+1怎么做 x+2x/3+x-80=720怎么做 4x-14=(x+2)*(x-3)怎么做 (x-1)(x-2)(x+3)怎么做 (X-1)(x-2)(x-3)怎么做呀? [3-2x/1-x]-1=[x+2/x-3]怎么做 1/（x+2)+1/(x+3)=1/(x+1)+1/(x+4)怎么做 数学分式方程3/(x-1)(x+2)=x-1/x-1怎么做?