|x+7|+15 > 12
|x+7|+15 > 12-15
|x+7| > -3
which is true for all real numbers because an absolute value expression is always greater than any negative number.
|x+7|+15 > 12-15
|x+7| > -3
which is true for all real numbers because an absolute value expression is always greater than any negative number.
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