5 6 2x 4 July 8, 2019 16 32 64 128 5 6 2x 4x 10 6 5 2x )=- 4 3x 1 5 6 2x 3 4x 6 5 2x 3 )= 4x 7 5 6 2x 4 )= 3x 4x 15 5 2x 6 )- 9x 4x 15 3x 5 2x 6 4 6 2x 5 4x 4x 5 6 2x 2 3 5 2x 6 )- 9x ≤ 4x 15 6 2x 5 x 4 6x 6 2x 5 )= 4 5x 1 4 x 5 )= 6 2x 1 4 3x 5 6 2x 7 2x 5 6 4 4x 7