Let C: x ^ 2 + y ^ 2 + 4x-6y = 0, if C is symmetric with respect to the line L: a * (x-2y) - (2-A) * (2x + 3y-4) = 0, find the value of real number a

Let C: x ^ 2 + y ^ 2 + 4x-6y = 0, if C is symmetric with respect to the line L: a * (x-2y) - (2-A) * (2x + 3y-4) = 0, find the value of real number a

If the center of the far circle is (- 2,3), symmetric to L, then l must pass the center of the circle