3 4x 7 x 4 8 July 8, 2019 16 32 64 128 3 5x 7 x 4 1 2 5 4x 8 3 4x 4 )+( x 8 )= 7x 2 (- 3x 11 3 4 * x 4x 7 8 6x 6 3 x 7 )= 4 y 5 4x 3y 8 0 4x 7 )( 2x 3 )- 8x x 4 )= 0