{ 1*k3*x1 + 1*k3*x2 + 1*k3*x3 + 1*k3*x4 + 1*k3*x5 = k3*k14,
  1*k3*x2 + 1*k3*x3 + 1*k3*x4 + 1*k3*x5 + 1*k3*x6 + 1*k3*x7 = k3*k15,
  1*k3*x3 + 1*k3*x4 + 1*k3*x5 + 1*k3*x6 + 1*k3*x8 = k3*k16 }