1 3 x 9 4 x 12 July 8, 2019 16 32 64 128 1 3 x 9 4 x 12 2 3 5 x 12 )=- 4 x 9 )+ 1 X 1 3 x 9 12 x 2 6 x 1 4 1 3 4 x 9 1 2 x 12 lvl 1-9 математика