[ Eq(1*k3*x1 + 1*k3*x2 + 1*k3*x3 + 1*k3*x4 + 1*k3*x5, k3*k14),
  Eq(1*k3*x2 + 1*k3*x3 + 1*k3*x4 + 1*k3*x5 + 1*k3*x6 + 1*k3*x7, k3*k15),
  Eq(1*k3*x3 + 1*k3*x4 + 1*k3*x5 + 1*k3*x6 + 1*k3*x8, k3*k16) ]