Geometrical Optics

Two thin convex lenses of focal lengths f₁ and f₂ are separated by a horizontal distance 'd' ( where f₁ and f₂ are greater than 'd') and their centres are displaced by a vertical separation 'δ'...Taking the origin of co-ordinates ,O ,at the centre of the first lens...Find the x and y co-ordinates of the focal point of this lens system,for a parallel beam of rays coming from the left????