2 x 9 ) 7 4 x 1 ) 1 July 8, 2019 16 32 64 128 2 x 9 )+ 7 4 x 1 )+ 1 1 2 x 23 9 1 4 x 15 7 2 9x + 7 4=x+1 7 2) 1 7 x + 4 9=10
