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