8x 5 7x 2 July 8, 2019 16 32 64 128 8x 5 9 7x 20 8x 3 5 7x 21 8x 3 2 5 7x 21 5 7x 8x 20 7x 5 8x 24 8x 2 3x 5 )( 7x 6 8x 2 7x 5 0 8x 5 2x 3 7x 1 2x 3 2x 4 8x 5 7x 10 7x 5 8x 25 (- 7x 5 2x2 8x 6 7x 2y 5 8x 7y 15 7x 12 5 8x 24 7x 2y 5 8x 7y 15 by elimination method (- 7x 5 )-( 2x 2 8x 6