2 7 9 x 3 4 5 July 8, 2019 16 32 64 128 5 6 7 9 x 4 3 1 2 2 x 7 5 x 9 x 3 4 x 7 6 2 3 x 4 5 x 6 7 x 8 9 4 3 x 7 2 5 7 9 x 4 13 2 9 + (-7 4) 2 9×+7 4=×+1 7 5 x 7 = 35
