(X-4)/6 - KX-1=1/3,
x-4-6kx-6=2,
(1-6k)x=12,
x=12/(1-6k)为正整数,
∴1-6k=1,2,3,4,6,12,
-6k=0,1,2,3,5,11,
若k为整数,则k=0.