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