Hi guys i need some help in solving this question

the problem is:

lim -> 0

and the equation is:

((1/x+3) - (1/3))/x

if its too messy above, basically (1/x+3) - (1/3) are all divided by 'x'.

Obviously, if I sub x = 0 then the equation will give me 0/0, so can anyone show me how to solve this one I would greatly appreciate it.

thanks guys