Răspuns::
1.
a)0,2(3)= (23-2)/90= 21/90=7/30
b)0,12(3)= (123-12)/900=111/900=37/300
c)0,01(72)=(172-1)/990=171/990=57/330=19/110
d)1,2(108)=(12108-12)/9990=12096/9990=4032/3330=2016/1665=672/555
e)2,73(5)=(2735-273)/900=2462/900=1231/450
2.
a) 0,5(4)=(54-5)/90=49/90
b) 0,07(2)=(72-7)/900=65/900=13/180
c)0,21(02)=(2102-21)/9900=2081/9900 (2081 e nr prim)
d)1,3(12)=(1312-13)/990=1299/990=433/330
e)2,05(7)=(2057-205)/900=1852/900=926/450=463/225