x-2/3-1=2x两边乘3
x-2-3=6x
6x-x=-5
5x=-5
x=-1

5x-2x(kx-1)=24
5x(-1)-2x(-1)x[kx(-1)-1]=24
-5+2(-k-1)=24
-5-2k+2=24
2k=-24-5+2
2k=-27
k=-13.5