18 x 7 15 x 6 July 8, 2019 16 32 64 128 Løs ligningen 15 * x 18 7 * x 6 18 x 5 17 x 6 16 x 7 15 x 8 18 x 7 1/2 18-x 7 18 x 7 x 12 1/8
