![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
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The expression is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=655ad1ff5939c01d38ec3d7a3c56eefd.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=a14a3786e66cafc5fec85755c8b80a6a.png\")
. (Absolute value of 18 is 18 and it is 18 units from zero)
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2bbdc35e1a54287fb20325e1ef7582de.png\")
. (Absolute value of -5 is 5 and it is 5 units from zero)
![\"\"](\"/userfiles/image/Library/number%20line_pa_64_p12.gif\")
Locate the integers “18” and “5” on the number line.
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\![\"\"](\"/userfiles/image/steps_images/step2.JPG\")
Rewrite the expression,
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![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=3b7b5a4029ca0f108e904522060972e9.png\")
(Subtract: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=74d7eba8df7a744ac42bfc4b41be4769.png\")
)
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![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
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Value of the expression is 13.
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