You can put this solution on YOUR website! -15+3|2n+5| is less than or equal to 42
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-15 + 3|2n+5| <= 42
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3|2n+5| <= 57
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|2n+5| <= 19
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-19 <= 2n+5 <= 19
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-24 <= 2n <= 14
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-12 <= n <= 7
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cheers,
Stan H.
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