Oblicz . Jeśli poprawnie rozwiążesz trzy kolejne przykłady z jednego poziomu możesz przejść na następny poziom. POZIOM A : a] 2/7:5/9= b] 3/5:7/11= c] 1/11:7/10= c] 5/7:3/8= POZIOM B : a] 1/9:5/6= b] 4/25:2/15= c] 4/9:6/7= d] 4/7:2/21= POZIOM C : a] 1 2/3:2 1/6= b] 1 3/5:7 1/5= c] 2 4/7:2 1/4= d] 1 3/10:1/12= NA JUTRO !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! DAJE NAJ PILNEEEEEEEEEEEEEEEEEEEEE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!