Apparently I've forgotten how to simplify algebraic fractions. I included the problem as a picture.(adsbygoogle = window.adsbygoogle || []).push({});

http://community.webshots.com/photo/461491683/476214616XrKOZJ#"

I can't figure out how they went from the red box and then to the green box and then the blue box. Obviously, I understand from the green to purple, but the rest is puzzling me. Any help would be appreciated.

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# Homework Help: Easy Question

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