kto rozwiąże zad. 2 daje naj ! ps. kto chodzi do 4 klasy niech zaprosi

25/45 = 5/9 16/24 = 2/3 48/120 = 6/15 75/100 = 3/4 21/91 = 3/13 36/78 = 6/13 100/10000 = 1/100 11/99 = 1/9