解方程:6x-(x-2)×5=2×4+12

解方程(x-2)/(x-3)-(x-3)/(x-4)=(x-5)/(x-6)-(x-6)/(x-7) 解方程:(x+3)/(x+2)-(x+5)/(x+4)=(x+7)/(x+6)-(x+9)/(x+8) 解方程：2x+4x+6x...+100x=1-(x+3x+5x+...+99x) 解方程 x+2/x+1+x+8/x+7=x+6/x+5+x+4/x+3 解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6) 解方程:x/2+x/6+x/12+x/20+x/30=5 解方程：(4/x-2)+(x-1/x-5x+6)+(2/3-x)=0 7x(x-6)+3x=4x(2x+5)怎么解这个方程 解分式方程：x-3/x-1-x-4/x-2=x-5/x-3-x-6 解方程1/(x+x﹚+1/(x+3x+2﹚+1/(x+5x+6﹚+1/(x+7x+12﹚=4/21得 解方程,x^5+2x^4+x^3+2x^2-6x-12=0 解方程：(x-2)(x^2-6x-9)=x(x-5)(x-3)