Scanf.scanf "%f %f %f %f %f %f" (fun a b c d e f ->
    let x = (b *. f -. c *. e) /.(b *. d -. a *. e) in
    let y = (c *. d -. a *. f) /.(b *. d -. a *. e) in
    Printf.printf "%.5f %.5f\n" x y
)