The expression is
(Replace a with -4)
(Add: )
The absolute value of 8 is 8 (Absolute value: )
The value of the expression is 8.
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=491b6a512975b75c48e1c9565e28e537.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=76d10a12aba00142d4e0c2244382bdbf.png\")
(Replace a with -4)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e43111a3d7d0dbba75cbf3b0f41a8057.png\")
(Add: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=49a87e82f1831cacf75408d1d817a26a.png\")
) ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=dfbe985aa5c4702a0f6c8a4b71320824.png\")
)![\"\"](\"/userfiles/image/steps_images/solution.JPG\")