3 6x1 5 July 8, 2019 16 32 64 128 3 6 x 1 5 3 5x5 6x1 4 3 7x2 6x1 5 2 3 5 6x1 2 3 4 5 6x1 2 3 x 1 5x 6 7x X 1 3 5 6 7 X 5 6 3x 1 3 5x 6 3 x 1 1 x y 3 5 6 3 x-5=x+3