\( H(S) = \frac{2}{3s} - \frac{1}{s+2} + \frac{1}{3(s+3)}\)

I would like to know the relationship between H(S) \(\Longleftrightarrow\) h(t) because I am required to find h(t).

I know that the solution is: h(t) = \(\frac{2}{3}u(t) - exp(-2t) + \frac{1}{3}exp(-3t)\)

Thank you!