4x 3 9x 7 July 8, 2019 16 32 64 128 3 4x 9x 2 8x 2 7 4x 7 )-( 9x 3 )= 21 3 4x 1 25 0 9x 7 9x 3 4x 8x 7 x 4x 5x 3 9x 7x 4x 3 3x 7 9x x 12 (- 3 4x 9x )-( 9 11x 7 3 4x 5 )- 7 9x 2 9x 5 4x 3 7 4x 7 1 3 9x 15 7 x 4x 3 9x 2y 9x 3 4x 7 4 4x 7 3 9x 6 1 3 9x 12 )= 4x 7 9x 4 3 4x 7 4
