5x 6 2x 13 July 8, 2019 16 32 64 128 5x 6 2x 7 13 x 1 5x 13 2x 6 12x 6 5x 10 2x 13 13x 5x 6 2x 5x 3 6 2x 3 13 2x 6 5x 5 )= 130 4 5x 6 1 2x 3 13 42 6 5 2x 5x 13 13 + 5x = 2 - 6x