13 x 7 9 July 8, 2019 16 32 64 128 13 x 7 9 13 x 7 91 13 7 x 9 4 23 28 13 7 x 9 4 13 х 7 4 9 3 13 4 7 x 91 X 7 )-( 2x 9 )=- 13 13 2 5 7 x 3 9 Решите уравнение 13 7 x 4 9 8 x 9 7 )=- 13 13 5 x 7 9 5x 13 x 9x 7 13 99 x 7 5x 13 x ≥ 9x 7 7 3 13 x 9
