Exact solutions are derived for three-dimensional, anisotropic, linearly ma
gneto-electro-elastic, simply-supported, and multilayered rectangular plate
s under static loadings. While the homogeneous solutions are obtained in te
rms of a new and simple formalism that resemble the Stroh formalism, soluti
ons for multilayered plates are expressed in terms of the propagator matrix
. The present solutions include all the previous solutions, such as piezoel
ectric, piezomagnetic, purely elastic solutions, as special cases, and can
therefore serve as benchmarks to check various thick plate theories and num
erical methods used for the modeling of layered composite structures. Typic
al numerical examples are presented and discussed for layered piezoelectric
/piezomagnetic plates under surface and internal loads.