The expression is .
(Apply commutative property of multiplication: )
(Multiply: )
The simplification is .
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
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.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=d8b54df0c0671d9c250632b55bffbe64.png\")
(Apply commutative property of multiplication: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=a9e4e1added4b105cbd9e363446c61bb.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=789643d3a35e792f01b65b7b41210dd9.png\")
(Multiply: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=13831fec3b21f1f7d04f5af4ec59638e.png\")
)![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=709efb341b191548eff76ad75e0686fe.png\")
.