(3 9 x) – 2 5 5 7 July 8, 2019 16 32 64 128 3 9 x )- 2 5 5 7 3 9 х )- 2 5 5 7 10 6 x 2 5 9 5 x 3 7 3 x-5=x+3 3 x 3 = 9 5 x 7 = 35