When i type in the below in python i got the outputs as shown:
>>> a=1/3
>>> b=1/3
>>> c=1/3
>>> d=a+b+c
>>> d
1.0
>>> f=1-(1/3)-(2/3)
>>> f
1.1102230246251565e-16
>>> g=1-(1/3+2/3)
>>> g
0.0
>>> 
if d value is 1.0 and g is 0.0 then why f value is not 0.0?
 
    