The expression is .
(Absolute value of 21 is 21)
(Absolute value of is 11)
(Subtract: )
The sum is positive
The sum is 10.
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=874149445d765682285127bd511dffb0.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=855233108492e5ae0de1a898460c0970.png\")
(Absolute value of 21 is 21)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=87777cdd64c5d179d4a779361b9727d7.png\")
(Absolute value of ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=3d39b68cd526a22097890cc682008fd4.png\")
is 11)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=40aed45537a43be7d4dff694b1de635a.png\")
(Subtract: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=737dbb2b0ef338775c1bcbcf31bd6b49.png\")
)![\"\"](\"/userfiles/image/steps_images/solution.JPG\")