I have a pdf and I use the plugin "Prinect PDF Assistant: Geometry Control" to split that into 3 equal-width pdfs. If I open each of the seprated pdf, the right margin of the first pdf is ZERO, the left and right margins of the middle pdf are ZERO, and the third pdf has zero left margin. Then I use the
\includegraphics to include all pdfs with
pdflatex, the output pdf will have each image centralized.
I want to control the scale of each page such that each page has the same marginal configuration as the original one.