X 16 12 13 July 8, 2019 16 32 64 128 X 16 12 13 solve and check X 16 12 13 solution Solve x 16 12 13 X minus negative 16 12 13 9 16 x 12 13 13 16 x 12 drill bit 16 3 x 12 13 10 13 16 x 12 13 10 x 17 16 x 13 x 12 centimeter sarcoma 16 x 13 x 12 cm 16 4 x 13 12 16 x 13 x 12 centimeter 12 13 16 x 2