7.
a. 2/3
b.5/7
c.9/10
d.15/11
e.13/12
f.9/18
g.25/19
h.14/18
8.
a.7/3
b.7/5
c.13/5
d.2/3
e.4/25
f.19/13
g.23/37
h.25/49
i.81/125
j.8/243
k.108/5
l.14/33
sper ca a ajutat
