Domain for x+7/3x

Question

How do I find the domain if it is just x+7/3x

Answer 1

 

Assuming the formula is x + 7/(3x)    (if its x+(7/3)x than the domain is "all x values").

 

I'd look for places where y = x+7/(3x) is defined.   It looks like it is defined _almost_ everywhere.  Hint: look a value of x that might cause the 2nd term to be undefined.