How to print 2 sides on the same paper?

Question

I have made a few designs in Adobe Illustrator.

Like i made magazines pages and business cards, and now i want to print them in a piece of paper and i need to print on both sides~

I have already centered my design in the middle of the page. But my Illustrator keep moving my design to one side everytime i want to print.

That's why i can't print right. I want to print 2 sides correctly.

How do i do it? Or what do i need?

Thanks~

Answer 1

IF you want it exactly like EXACTLY the same where it matches up print it on one side then turn put it in the printer like you are looking at it right side up

IF you want it front and back but like a flyer so all the words are right side up print it then but it in the printer upside down like you are not reading it.

hope this doesn't confuse you!