Add [9.159.135.84]+[2.117.354.99]\displaystyle {\left[\begin{array}{c} {9.15}\\{9.13}\\{5.84}\end{array}\right]}+{\left[\begin{array}{c} {2.11}\\{7.35}\\{4.99}\end{array}\right]} if possible.
If not possible, enter DNE.