9x 7 x 2 4 July 8, 2019 16 32 64 128 9x 2 2x 7 )( x 4 7 9x 4 2 x 9 7x 1 7 x 4x 2 9x 4 3x 2 9x 7 x 2 9x 7 3x 4 3x 2 x 6 X 2 6x 7 )(- x 2 9x 4 X 7 8x 9x 3 4x 2 3 9 x 8 = 9/7 x 4 7 x 9 2x 7