6 1 x 9 4 6 July 8, 2019 16 32 64 128 6 3 4 x 9 1 6 4 9 5 6 x 1 6 3 6 1 4 6 9 x 2 3 6 1x 9 4 )+ 6 6 4/9 x =1 6 x 1/9 6 x 9 1/2
