X 4 9 2 3 x 6 7 July 8, 2019 16 32 64 128 9 1 x 6 3 )/( 4 2 x 7 6 6 4 x 9 5 7 x 3 2 2 3 x 4 5 x 6 7 x 8 9 6 x 3 2 x 7 8 4 9 - (x - 6 9) + 4 8 = - 3 4