x_{46} = k_{234} - \left(x_{3} + x_{4} + x_{5} + x_{6} + x_{9} + x_{10} + x_{11} + x_{12} + x_{15} + x_{16} + x_{17} + x_{18} + x_{21} + x_{22} + x_{23} + x_{24} + x_{27} + x_{28} + x_{29} + x_{30} + x_{33} + x_{34} + x_{35} + x_{36} + x_{39} + x_{40} + x_{41} + x_{42} + x_{43}\right)