12 x 2 4 5 July 8, 2019 16 32 64 128 12 1 2 x 4 5 5x 12 x 2 4 x 1 3 0 2 x 4 )= 5x 12 12 3 4 x 2 5 12 4 5 x 15 )= 2 5x 6 4 x 2 12 x 5 0 2 (- x 1 )+ 5x 4 =- 12 12 1 2 x 2 1 4 reifen 57 203 7 12 x 5 18 2 4 9 Fahrradschlauch 12 5 x 2 1 4 12 25 x 5 3 2 3 5 4 Kahles helia 2 4 12 x 56 12 x 2 5x 4 12 2x 6 12 2 x 4 )= 7x 5 5x 12 2 5 x 2 4 7