Ajutați-mă urgent la ex: 1,2 !!!!!!!!!!!!!!!!

Răspuns:
1. a)13/11
b)7/16
c)9/47
d)7/50
2. a)15/8
b)44/35
c)7/23
d)3/8
e)8/33
f)11/36
g)47/19
h)10/13