10 2 x )= 15 x 1 ) 5 July 8, 2019 16 32 64 128 10 2 x )= 15 x 1 )+ 5 10 1 2 x 5 3 4 x 15 1 2 x 10 )= 3 5 x 15 )- 6 10 15 + 5 х 15 - x = 14 15