1 6x 5 7 July 8, 2019 16 32 64 128 6x 1 =- 5 7x 1 4x 5 6x 7 5 1 6x (- 7 9 5 1 6x 7 2 6x 5 7 2x 1 3 2 6x 1 3x 5 4x 7 5 6x 1 7x )* 42 82 7x 1 )-( 6x 3 )= 5 6x 7 5 4x 1 )- 16 6x 1 6y 5 7y 2x M 1 6x 5 m 7 115 1 2 6x 5 )- x 7 2 6x 1 5 (- 2x 1 7