The inequality .
(Replace x with 12 in original inequality)
(Subtract: )
The inequality is true.
The inequality is true for x = 12.
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.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=1f0dedfb014b83c2e15338f6523dde5a.png\")
(Replace x with 12 in original inequality)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=f59c98534be4d36fc2712c0a01183ac5.png\")
(Subtract: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=15921e2cc60e200d4b006eb80a499436.png\")
) is true. ![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
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is true for x = 12.