The expression is
(Substitute in original expression)
(Cancel common terms)
The value of the expression is .
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c25ad74ac6b4ab3194af53231895eef3.png\")
![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=dd316cb14862434345dee227cd8e81a8.png\")
(Substitute ![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=cb888abfacd3342f7b4d56e28d96827e.png\")
in original expression)![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=4b7d032e1bb1d51e0d296c80d59722b1.png\")
(Cancel common terms) ![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=de23d30f87928f0e896f953c014623c3.png\")
![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
![\"\"](\"http://c4anything.com/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=d93f4e0113e9d1b21f5af9aaed21c03b.png\")
.