A) 1 și 1/3=4/3
1,(6)=16-1/9=15/9
4/3+15/9=12/9+15/9=27/9=3
B) 3,1(2)=312-31/90=281/90
11/2+281/90=495/90+281/90=776/90 =388/45
C)1,1(3)=113-11/90=102/90=51/45
2,(5)=25-2/9=23/9
1,3=13/10
51/45+23/9+13/10=amplificam prima cu 2 a doua ci 10 iar a treia cu 9
102/90+230/90+117/90=
332/90+117/90=449/90
