inverse laplace tranform

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I have a simple question,

There are some functions $f(t)$, $g(t)$ and lets say $F(s)$ and $G(s)$ for the form of Laplace transform of $f(t)$ and $g(t)$, respectively.

While I am solving differential equation with Laplace Transform,

I got this relationship

$$F(s)=\frac{f(0)}{s + G(s)}$$

how can I solve in terms of $f(t)$?

I looked up the convolution theorem but it is not a form of $f(t)*g(t)$

please help me

Thanks in advance