解方程:1、 2(x－4)=3(x-12) 2、7(3-3x)=14x+3.5

解方程 x+2/x+1+x+8/x+7=x+6/x+5+x+4/x+3 解方程:1、 2(x－4)=3(x-12) 2、7(3-3x)=14x+3.5 解方程：2x(x-1)-x(3x+2)=-x(x+2)-12 解方程 x(2x-4)+3x(x-1)=5x(x-3)+8 方程(x-1/x-2)-(x-3/x-4)=(x-2/x-3)-(x-4/x-5)解为x=7/2,(1/x-7)-(1/ 解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6) 解方程(x-2)/(x-3)-(x-3)/(x-4)=(x-5)/(x-6)-(x-6)/(x-7) 解方程】(x+8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3) 解方程：（x-8）/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3) 解方程(x+1/x+2)-(x+2/x+3)=(x+5/x+6)-(x+6/x+7) 解方程：x+2/x+1-x+3/x+2=x+6/x+5-x+7/x+6 解方程:(x+3)/(x+2)-(x+5)/(x+4)=(x+7)/(x+6)-(x+9)/(x+8)