The statement is “”.
Apply associative property of addition: .
(Apply additive inverse property: )
(Apply additive identity property: )
The sum is .
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”.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=0ac940ec69cdcbea7470db4d2cb12516.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=9a7658e795ebe1ccecc12695369014c0.png\")
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(Apply additive inverse property: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=54cf096d733eada0c488fcc7fefd493a.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=40aed45537a43be7d4dff694b1de635a.png\")
(Apply additive identity property: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=56a099c88839eee856c69ae3dbb2d7c6.png\")
)![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
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.