5 x 1 6 21 July 8, 2019 16 32 64 128 What is the solution of 5 x 1 6 21 3 x 1 6 2x 5 21 X 2 5 x 1 2 6 216 5 x 5 x 5 x 5 x 5 5 x2 5 - x
