1 5 x 160 July 8, 2019 16 32 64 128 1 5 x 1600 16000 x 1 5 1 3 5 x 1600 1 3 5 7 x 1600 Tìm x 1 3 5 x 1600 1 3 5 7 9 x 1600 Tìm x biết 1 3 5 x 1600 1x 5 160 x 5 =
