将x=1带入,2k+a/3=1+(7-bk/6) 2k+6k/b=8-a/3
∴2+b/6=0 b=-12 8-a/3=0 a=24 2ay-4b=48y-4×(-12)=48y+48=48(y+1)=3 ∴y=-15/16