[ Eq(1*k26*x1 + 1*k27*x2 + 1*k27*x5, k26*k39 + k27*k40),
  Eq(1*k26*x1 + 1*k26*x3 + 1*k26*x6 + 1*k26*x7 + 1*k26*x8, k26*k41),
  Eq(1*k26*x11 + 1*k26*x12, k26*k42) ]