9 - 2(- 4x 7) = 7 July 8, 2019 16 32 64 128 9 2 (- 4x 7 )= 7 2 4x 7 )= 7x 9 (- 3x 2 7x 9 )+( 4x 2 6x 7 2 7x 9 11x 4x 7 4/7 x 9 9 - 2 x - 4 x + 7 = 7
