15 • (2 7 4 2) July 8, 2019 16 32 64 128 7 2 4 2 )(- 15 15 2 x 3 7 4 5 2 15 1 2 x 7 x 4 1 2 15 4x 2 7 2x 13 4 2x 4 7 4x 2 15 15 7 4 5 x 2 7 2 P 7 )=- 4 x 15 2 2 M 4 2m 7 2 15 15 2 x chia 3 7 4 5 2 15 25 x 2 4 7 3x2 =- 16 15 • (2 7 + 4 2) 15 - 4 2/7 7 15 + 2 15 - 2 4/15 (-1 7)