Can anyone help me with this physics equation?

Question

1/2+1/d=1/6

Thanks

=] Chris

Answer 1

1/2+1/d=1/6

1/d=1/6-1/2

1/d=-1/3

d=-3

Answer 2

what do you mean?  what is it supposed to describe?  or is that wat ur asking?

Answer 3

1/2+1/d=1/6

3/6+1/d=1/6

1/d=1/6-3/6

1/d= -2/6

d/1= -6/2

d= -3