4 9 10 x 2 1 2 July 8, 2019 16 32 64 128 10 2x 1 )- 9 x 2 )+ 4 5x 8 )= 71 4 1 5 x 9 3 10 x 2 1 2 10 9 x 2 )=- 3 2 6x 4 )- 1 9 4 1 x 10 3 x 2 4 x 2 4 9/10 x 4 1/2 9 4*10^2 и 2 1*10^3 4 x 9/10