求下列各对直线的公垂线的方程：[tex=6.214x2.786]fnpmC2J6JmQBLyo5NmGAz9Vyt8R/qy/bhglMUDmqLpujigIk3DBryKxk0vkuMHp+Jod3urXeP9bIAj9EPak/GQ==[/tex]与[tex=6.571x2.786]fnpmC2J6JmQBLyo5NmGAz9+L6neUwnGCajisJ+Xe6ckAhfH6GGnxRvZ4Fb047fUhwvdD0xzk5zMx0/ofEuInRg==[/tex]。