9 x 7 5x July 8, 2019 16 32 64 128 9 7 x 5x 1 7x 9x 9 5x 7 9 3 3 x )= 7 5x X 7 )(- 5x 9 )= 0 4x x 7 )( 5x x 9 Log7 x 9 )= log7 5x 7 X 9 7 5x 8 6 9x x 7 5x 4 8 3x 12 4x 9 9x 7 5x X 9 20 5x 7 10