input: Write a python function to solve a system of linear equations using numpy.
  assert np.allclose(solve_linear_eq([[2, 3], [5, -4]], [5, 7]), [1.0, 1.0])
  assert np.allclose(solve_linear_eq([[1, 2], [3, 4]], [5, 6]), [-4.0, 4.5])
  assert np.allclose(solve_linear_eq([[4, 2], [1, 3]], [8, 7]), [1.0, 2.0])
output: import numpy as np
  
  def solve_linear_eq(coefficients, constants):
      coefficients = np.array(coefficients)
      constants = np.array(constants)
      solution = np.linalg.solve(coefficients, constants)
      return solution