\
\
The expression is
.
\
Cancel common terms.
\
\
\
The value of expression is
.
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c92a1bf2e819041b86c77061c02bac38.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=523469f24dd3e35871eed2eec66bc061.png\")
![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=09e3d9ec057ec755b9fc1edae7e20d39.png\")
.