6 x 5 90 July 8, 2019 16 32 64 128 900 x 6 5 4200 900 x 6 5 Solve for x 6 5 x 90 5 x 6 2 90 900 x 6 5 bằng bao nhiêu 6 × 90 6 x 90 5 x 90