I need to prove $\displaystyle f(x) = ((x+1)/x)$ is an onto function. I'm kind of hazy here, am I supposed to subsitute and solve for x? Such as, $\displaystyle y=((x+1)/x)$. IF that is the case, I can't get it to add up to prove that function is onto. I know answer to problem, its just I think I'm jackng up my algebra and want to be able to do all the steps involved.

Thanks!