X 9 4x 7 July 8, 2019 16 32 64 128 X 9 4x 7 11x 3 Solve x 4x 9 3x 7 4x 9 x 7 )=- 12 X 2 4x 79 9 5x 7 x 4x 9 7x 3 x 4x 9 5x 2 x 9 7 4x 7 (- 6 x )- 4x =- 9 X 4x 9 )( 7 3x 2 x 9 =- 7 4x 3 2 x 9 7 4x 8 2x 9 4x 7 x 3 4x 7 )( x 9 )= 0 81 729 2 x 9 4x 4x 7 x 9 )= 19
