a)la numarul 3 ii punem 1 jos si vine (3/1×1/2-1/2)+(1/1×1/3-1/3)=
dupa amplificam 3/1 cu 2 si 1/1 cu 3 si vine 3/1=6/2
si 1/1=3/3
si dupa calculam prima paranteza (6/2×1/2-1/2)=6/2×1/2=6/2-1/2=5/2
si cealalta paranteza (3/3×1/3-1/3)=3/3×1/3=3/3-1/3=2/3
la final 5/2+2/3=
amplificam 5/2 cu 3 si 2/3 cu 2→ 5/2=15/6. 2/3=4/6
si 15/6+4/6=19/6
sper ca team ajutat
