1 4 5 x 2 2 9 July 8, 2019 16 32 64 128 1 4 5 х 2 2 9 2 3 x 5 )- 1 4 x 2 )= 9 2 1 4 5 x 2 2 7 x 10 9 2 3 x 5 )- 1 4 x 2 )= 9 2 verify 2 3 x 5 )- 1 4 x 2 )= 9 2 solution 4 1/2x=9 9 1 4/9 x =5 2 1 4/9 х =5 2