# Feedback Block Diagram Reduction

For this diagram reduction question, I thought pushing the summing junction to the left past the G1(s) is can be a solution but is it correct that pushing to number 2 then we can collapse the summing junctions?

• If you would simply write down the transfer functions of the system before and after the change you propose then you would know if the change makes will affect the system or not. Shortcut: assume $G_3(s)$ and $H(s)$ are both zero and determine the transfer functions. – Bimpelrekkie Mar 18 at 12:31