The expression is .
Combine like terms using distributive property: .
(Add: )
The simplified expression is .
![\"\"](\"/userfiles/image/Library/Distributive_Property4.gif\")
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
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.![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=21db976d5eb00d2c327fb01492c7cb71.png\")
.![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=9d2c7dee23ef5c70cb1d88fc94007a40.png\")
![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=65a6f075023d003ae9c90df773a04fde.png\")
(Add: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=06cdc6db1f8652666d822f189cdf71b1.png\")
)![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
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.