1. The problem statement, all variables and given/known data Hello, I'm trying to reduce the following block diagram 2. Relevant equations 3. The attempt at a solution I appear to be having some issues in doing this. The first thing that I did to reduce this block diagram was to take the forward path that has 2/(s+4) with negative feedback of 2, and reduce this by (K G(s))/(1 + K*G(s)*H(s)) = (3/(s+4))/(1 + 6/(s+4)) = 3/(s+4 + 6) = 3/(s+10) I also moved the 1/s block to the left of the summation. This resulted in a parallel path with a gain of one. I reduced this to simply a forward path with 1/s + 1. I then did the following with 6s and the negative feedback with a gain of 1 This resulted in a reduced diagram with (1/s +1)*3/(s+10) in the forward path with a negative feedback of 6s+1 I guess I have done something wrong, and I'm not exactly sure what. Below is a picture of what I did. Thanks for any help. I guess I'm doing something wrong, but am not exactly sure what it is I'm doing wrong.