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=95bcc07ff5737c8eb5ca2f8a60517637.png\")
.![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=95bcc07ff5737c8eb5ca2f8a60517637.png\")
(Original expression)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=7c0528d3abac40d1ee59372adbc20ef5.png\")
(Commutative property: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2901b60c70c9fe1786b3af094dbb1e98.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=3d6598eb5d8365fb7968b8947491631c.png\")
(Simplify)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=0e83b0d0477890c3f3993ab2cd11c98d.png\")
.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=b7370abad749c1f86c1092495fea5057.png\")
.