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