Clean up pictures in Photoshop

This project is for a Photoshop expert The task is to clean up 7 images than I have scanned in from a brochure. Unfortunately the images go over 2 pages and you can see where the pages divides (there is a line in the middle of the images). I know a clean up in Photoshop can be done with the images so I can use them for a client's website. Other work will come from this.