In a circus there are 11 carnivorous animals including tigers, lions and panthers. It is known that each lion eats three kilos of meat a day, that each tiger eats two kilos a day and each panther also two kilos. If a total of 25 kilos of meat are needed per day and it is known that the number of panthers is three times the number of tigers, how many lions, panthers and tigers are there? Solve the exercise using matrices (Gauss or Gauss-Jordan)