7 2 9 3 5 9 July 8, 2019 16 32 64 128 7 9 2 3x 1 9x 5 3 3 5 x 7 9 3 5 x 2 9 Simplify 2 3 5 9 7 9 Add and simplify 3 7 9 2 5 9 Lcm of 2 3 7 9 5 9 2 2 9 9 tetrametil 3 5 7 decatriino 7 9 ( 2 3 4x )+ 5 9 23 27 3 5 9 2 7 9 đúng hay sai
