1 2 9 7 5 3 July 8, 2019 16 32 64 128 1 2 3 5 7 9 arithmetic sequence 7 9 2 3x 1 9x 5 3 3 2 9 x 1 5 7 4 5 * x 7 3 1 2 9 3 1 2 (- 3x 9 )- 5 7 1 2 3 5 7 9 next number 2x 1 2 3x 7 9 5 18 5 1 2 3 7 9 as a fraction 2x 7 (- 3 x 2 1 9 )( 3x 5 18 1 2 2x 6 )+ 5 2 3x 9 7 3x 1 3 v 5 2 9 v 7
