Solve the system of equations with numpy and linalg: 4x + 2y + z = 4 x + 3y = 12 5y + 4z = -3

import numpy as np

def system_solver(a, b, c, d, e, f):
  return np.linalg.solve(a, b)

a = np.array([[4, 2, 1], [1, 3, 0], [0, 5, 4]])
b = np.array([4, 12, -3])

system_solver(a, b)