a) 0,(2)+0,(6)=2/9+6/9=8/9
b) 0,(27)+0,(12)=27/99+12/99=39/99=13/33
c)0,(4)+0,(31)=4/9+31/99=(44+31)/99=71/99
d)0,(95)+3,(5)=95/99+32/9=(95+352)/99=447/99=149/33
e) 15,4(3)+0,4(6)=(1389+42)/90=1431/90=477/30
f)6,8(12)+7,(21) =6744/990+714/99=(6744+7140)/990=13884/990=
=4628/330=2314/165
g)0,(123)+0,(321) =123/999+321/999=444/999=4/9
h)9,(8)+5,(21) =89/9+516/99=(979+516)
/99=1495/99