output_description: For each data set, print x and y separated by a single space. Print the
  solution to three places of decimals. Round off the solution to three decimal
  places.
input_description: The input consists of several data sets, 1 line for each data set. In a data
  set, there will be a, b, c, d, e, f separated by a single space. The input
  terminates with EOF.
attempt: print("ok")
  
problem_description: Simultaneous Equation
  
  Write a program which solve a simultaneous equation:  
    
  ax + by = c  
  dx + ey = f  
    
  The program should print x and y for given a, b, c, d, e and f (-1,000 ≤ a, b,
  c, d, e, f ≤ 1,000). You can suppose that given equation has a unique
  solution.
samples: [{"input": "1 2 3 4 5 6\n    2 -1 -2 -1 -1 -5", "output": "-1.000 2.000\n    1.000 4.000"}, {"input": "2 -1 -3 1 -1 -3\n    2 -1 -3 -9 9 27", "output": "0.000 3.000\n    0.000 3.000"}]