X 5 9x 3 20x July 8, 2019 16 32 64 128 X 5 9x 3 20x 0 X 5 2x 4 10x 3 20x 2 9x 18 7 9x 3 x =- 20x 5 5-x = 9 2-3x -4 3 x-5=x+3