2-(x-1)/3=(1-x)/2+3两边乘612-2(x-1)=3(1-x)+1812-2x+2=3-3x+183x-2x=3+18-12-2x=74-(kx+2)/3=3k-(2-2x)/4两边乘1248-4(kx+2)=36k-3(2-2x)48-4kx-8=36k-6+4xx=7所以40-28k=36k-6+2864k=18k=9/32