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16 December, 22:42

Explain why 3|2x+1|<-9 has no solution

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  1. 16 December, 22:47
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    First of all, you have to know |2x+1| is >0 or = 0 forever. However, - 9 divided by 3 equals - 3. - 3 is still negative. How can a positive number or zero is less than a negative number? In a word, 3|2x+1|<-9 has no solution.
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