The expression is .
Find the additive inverse identity.
The additive inverse property: .
(Add to the expression)
The additive inverse of is .
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.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=7757f790e29b8ca1055ea972ef10b653.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c7e63d1c3e2649b0302011278f4eecf7.png\")
(Add ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=7a90584f28362f74b3a2b33df0abba5b.png\")
to the expression) ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2a4f4b4eedbf2042d03b7287202be4bb.png\")
is ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=7a90584f28362f74b3a2b33df0abba5b.png\")
.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
is .