va rog dau coroană .......

4/9•(3/9+1/2:75/100):8/9
4/9•(1/3+1/2:3/4):8/9
4/9•(1/3+1/2•4/3):8/9
4/9•(1/3+2/3):8/9
4/9•3/3:8/9
4/9•1:8/9
4/9•9/8
1/2
0,5