The expression is .
(Apply associative property of addition: )
(Add: )
(Product of two different signs is negative)
The simplified expression value is .
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=f54bcc7336c6e6528275e24ee6f85819.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=0ac940ec69cdcbea7470db4d2cb12516.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c9e6c70b2df809f444c4683a2aa3f568.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=dcbbfbc49ed4956c4feb69494133bf64.png\")
(Add: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=5ae9faf5efc93d8246a8b9f73e8af82c.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=93f7d434b9c730c6980adf53071310ba.png\")
(Product of two different signs is negative)![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=4d28191e6d0e3c4a55215469494806d5.png\")
.