2 x 5 )- 7 19 July 8, 2019 16 32 64 128 2 x 5 )+ 3 x 7 )= 19 19x 7 2 x 5 Let x =( 5 root 2 7 19 7 5 x 2 )=- 197 6 2 x 8 )+ 7 5 x 2 )- 3x 19 19 x 2 21 7 5 2 x 2 5 5 x 7 = 35 2 5 x 7