13 3 4 x 5 July 8, 2019 16 32 64 128 13 х 4 3 х 5 13 3 x 1 )= 4 5x 4 x 5 )- 3 6x 13 3 5 x )+ 13 4 3x 8 13 4 3 2 x 5 17 5x 13 3 x 4 2x 1 4x 13 3 4 - x 13 0 5 13 5x 4 x 3 13 1 3 x 3 4 5 13 5 x 5 4 3 42 2x + 3y = 13 4x + 5y = 23 13 3 5 x 11 3 4 13 x 4 )+ 9x 12 3 50 5 x 6 y 13 3 x 4 y 7