Related Post: 3 9 X 3 6 3 9 3 X 6 4 3x 9 X 6x 3 3 9 X 6 8 9 X 3 6x 9 X 3 )= 63 3 9 X 6 2 3 9 X 6 7 3 6 * 9 X 3 12 F (- 3 X )= 9 6 (- 3 X