1 3 4 x 9 ) 5x July 8, 2019 16 32 64 128 1 3 4 x 9 )+ 5x 1 2 x 9 )= 3 4 5x 1 1 3 7x 4 )- 1 15 5x 9 )= x 15 1) x + 5 3=-4 9 1 9 x 3 5
