wpisz brakujące liczby to sa ułamki 1/2x =1 2/5x =2 /3x3=2 2/ x7=2 4/7x =4 4/4x =4

2 3/5 x 10/13 = 13/5 x 10/13 = 2 4 1/2 x 11/3 = 9/2 x 11/3 = 16,5 2 1/7 x 2 1/3 = 15/7 x 7/3 = 5 2 2/5 x 11/4 = 12/5 x 11/4 = 6,6 2/4 x 2/7 x 7/11 = 2/14 x 7/11 = 2/22 = 1/11 5/9 x 4/13 x 3/5 = 1/3 x 4/13 = 4/39 11/2 x 2 2/3 x 1 3/4 = 231/3 = 77 2 1/3 x 2 1/3 = 7/3 x 7/3 = 49/9 11/3 x 11/3 x 11/3 = 1331/27