5 1 5x 1 )- 5 July 8, 2019 16 32 64 128 5 1 5x 1 5x 2 1 5 x 1 5x 1 5 1 5x 4 5 1 5 2 5 5x 1 )+ 3 5 1 1 5x 5 1 4x 5 1 1 5x =- 4 5 5 x 2 1 5x 8 )-( 1 5x 5 1 3x 2 5 1 5x 2 5 1 5 2 5x )= 1 2 x 1 5 1 5 1 5 x )= 6 7 5x 5x 1 2x 3 2x 3 5x 1 5 2 5x 3 x 1 5 ) 4x 1 5 5 5x 1 5 9x 6 5 1 5x )+ 5 (- 8x 2 )=- 4x 8x 1 5x 1 5x 1 5 as a fraction