“…There are many studies on Adomian decomposition method (ADM) which can evaluate the solutions of FPDEs. The ADM has been applied to obtain approximate solutions of linear or nonlinear fractional differential equations, fractional ordinary differential equations (FODEs), FPDEs, integral and integro-differential equations [7,8,9,10,11,12,13,14,15]. Meanwhile, there are many applications of solution methods based on variational iteration method (VIM) to ordinary-partial differential equations and other research areas [16,17,18,19,20].…”