Posted by dom on Tuesday, February 12, 2013 at 9:03pm.
http://www.mathsisfun.com/algebra/fractions-algebra.html
http://www.google.com/webhp?source=search_app#hl=en&tbo=d&sclient=psy-ab&q=algebraic+fractions+Khan&oq=algebraic+fractions+Khan&gs_l=serp.3..0j0i30j0i5i30j0i8i5.27023.28628.0.29076.5.5.0.0.0.0.148.555.3j2.5.0.les%3B..0.0...1c.1.2.serp.tMzmx85WLRg&pbx=1&bav=on.2,or.r_gc.r_pw.r_qf.&fp=46b32df0a3da7317&biw=711&bih=453