13 8 9 5 July 8, 2019 16 32 64 128 13 9 8 3 5 4х 5 13 8 9 4 8 )+ 5 (- 9 )=- 13 13 8 5x 9 )= 21 9 13 8 50 8 13 6 5 9 13 =- 8x 9 5x 8 13 5 9 minus 8 1 6 9 5x 8 13 13 54 9 8 3x 8 5 9 13
