1 7 x July 8, 2019 16 32 64 128 1 7 x +4 9=10 1 7 x 1 7 1 7 x 3 1 7 x = 6 4/5 1 7 x 5 1 7 x 6 1 7 x 2 1 7 x 4 1 7 x 100 1 7 x 2 3 1 7 x 14 1 7 x 8 1 7 x 10 1 7 x10 21 1 7 x 28