The expression is .
Simplify the expression.
(Original expression)
(Commutative property: )
(Simplify)
The simplified expression is .
.
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=005ff5cf12ff639a25bb44bc150e8551.png\")
.![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=005ff5cf12ff639a25bb44bc150e8551.png\")
(Original expression)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=8b3d5a1c6337fd588ec6a4b6899dc9b6.png\")
(Commutative property: ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2901b60c70c9fe1786b3af094dbb1e98.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=54711a979c96e0236d71d91ef94bf2a5.png\")
(Simplify)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=978c329e4ed31f4a539c92e652f1fa05.png\")
.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=4a22662f9ce789e0832eaa7392867aca.png\")
.