Răspuns:
8.
a)12/5
b)25/8
c)17/3
d)35/11
e)30/7
f)64/9
g)44/7
h)65/12
9.
3+1/2 = 3/1+1/2 = 6/2+1/2=7/2
2+3/5 = 2/1+3/5=10/5+3/5=13/5
2/3+4=2/3+4/1=2/3+12/3=14/3
5/6+7=5/6+7/1=5/6+42/6=47/6
5+2/5 = 5/1+2/5 = 25/5+2/5=27/5
10+3/7= 10/1+3/7 = 70/7+3/7 = 73/7
