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System$1$ and System$2$ are connected by parallel connection.

System$1$ has an input$-$output relationship as given below:

$z(t)=dx\frac{t}{d}t+5x(t)$

where $z(t)$ is the output of the system$1.$

System$2$ has an input$-$output relationship as given below:

$g(t)=3x(t)$

where $g(t)$ is the output of the system$2.$

Overall system has an input $x(t)$ and an output $y(t).$

Overall system has an input$-$output relationship as given below

$y(t)=$

$dx\frac{t}{d}t+x(t)$

Fourier transform of the output signal is:

$$

$$ j $$