a) 2/4=1/2
3/6=1/2
100/200=1/2
(1+5)/(7+5)=6/12=1/2
4/9=4/9
(2+4+6)/(3+5+7+9)=12/24=1/2
Raspuns:4/9
b)12/24=1/2
1212/2424=1/2
33/66=1/2
121212/242424=1/2
303/666=101/222
Raspuns:303/666
