If \(\left[ {\begin{array}{*{20}{c}} {2a + b}&{a - 2b}\\ {5c - d}&{4c + 3d} \end{array}} \right] = \left[ {\begin{array}{*{20}{c}} 4&{ - 3}\\ {11}&{24} \end{array}} \right]\), then value of a + b - c + 2d is :