30 x 3 14 July 8, 2019 16 32 64 128 X 14 3 )= 2x 30 30 25 x 3 14 2 x 3 14 x 30 30 5 x 3 14 14 x 30 x 3 air filter 30 5 x 3 2 x 14 4 3 14 x 30 bằng bao nhiêu 30 14 x 3 6 30 x 14