Related Post: 2 3 X 210 2 3 X 2100 2 3 Times 210 X 2 )( 30 X 3 )= 210 21000 X 2 3 X 3 3x 2 2x 210 0 X 3 3x 2 2x 210 3 X 6 2 6 210 1 2 3 X 210 Tính 1 2 3 X 210