9 x 15 x 25 x July 8, 2019 16 32 64 128 5 * 9 x 3 * 25 x 8 * 15 x 3 5 x )( 9 15 x 25 x 2 25 x 9 x 2 15 x Tìm x 26 5 x 9 15 x 25 3 15 x 9 = 15 x 9 x 9 9 × 15
