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