The statement is “”.
(Apply additive inverse property: )
(Apply additive identity property: )
The sum is 6.
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
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”.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=98bdc487b65831b51fe952368e6f994f.png\")
(Apply additive inverse property: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=4f07dfd8dabb30b30ffcb043f6a32ea6.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=915586cec9b2b14a12564f0d4530397f.png\")
(Apply additive identity property: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=f61775fe2c87cf3eb1f1a6ae813daf3f.png\")
)![\"\"](\"/userfiles/image/steps_images/solution.JPG\")