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algebra intermediate

Problem

What is the least integer value of such that ?
Solution
Clearly, the inequality has some solutions for which is negative. For example, if , then , so , which is less than 16. As we make even smaller, gets even more less than zero, so gets larger. But how small can we make ? To figure this out, we note that if is negative, then . Then, our inequality becomes . Multiplying both sides by (and flipping the direction of the inequality symbol) gives . Subtracting 7 and then dividing by 2 gives . So, the smallest possible integer value for is . Checking, we see that when , we have , which is less than 16.
Final answer
-11