7 1 x 7 1 x 50 July 8, 2019 16 32 64 128 Solve 7 1 x 7 1 x 50 7 x 1 7 2 x 50 7 x 1 5/7 1 7+x 5 7 x-1 7 x 1 1/7 7 1/5 x = 7 1/2