2 7x =- 5 1 7 July 8, 2019 16 32 64 128 7x 1 5 3x 7 2 6 x 7x 5 4x 5 )- 2 6x 7 )= 1 1 2 7x 4 5 7y 2 11 14x 11 14y 2 7x 6 )-( 1 7x 5 1 7x 8 2 7x 5 5 7x 2 1 2x )=- 8 7 7x 2 x 3 5 x 1 3 7 4x 7 x 1 )= 4 2 7x 5 2x 7 2-7x 5 2 7 x = −5 1 7
