The expression is .
(Absolute value of is 21 and it is 21 units from zero)
Locate the integer “ on the number line.
The value of the expression is 21.
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.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=f56833abdcb324673dc919ea5bd48b49.png\")
(Absolute value of ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=81ace7ac05a7db21148d1c9dd64e34e9.png\")
is 21 and it is 21 units from zero) on the number line.![\"absolute](\"/userfiles/image/Library/Pre_Algebra/absolute_value_minus_21.gif\")
![\"\"](\"/userfiles/image/steps_images/solution.JPG\")