I'm not sure if enough of the framing has been exposed in these photos to answer this question, but thought I would give it a try. I have more photos I can add, but I can only seem to put one in?
We have one last window to replace in our home, the front room bay window. We would like to make any of these three windows wider if possible, particularly the two smaller side windows.
On the side of every window there is a double set of 2 x 4's.
We are wondering where there is 2 on each side of the small windows and then another two on the side of the large window, can any of those be changed to just one 2x4 so the window could be a bit wider? Or does each one need to be there for strength and support? It doesn't look like there are individual headers above each window.
If you look in the photo showing the exposed framing in the top left corner of the smaller window you can see at the king stud and two jack studs and the large header. That header runs right across the entire set of windows. The house was built 30 years ago if that helps with the answer.