Problem $4$ Additional workspace on the next page

$1)$ Perform block diagram reduction on the following block diagram to get the overall system function $\backslash ($ H$($s$)\backslash ).$ Reduce them to a single block and simplify $\backslash ($ H$($s$)\backslash )$ to the most reduced form. $(10$ points$)$

$2)$ Write the time$-$domain differential equation based on the system function $\backslash ($ H$($s$)\backslash )$ from $1).(5$ points$)$