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01-12-2014
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what's 6-4(6n+7) is greater than or equal to 122

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LadyCiel LadyCiel

03-12-2014

6 - 4(6n+7) ≥ 122
-4(6n+7) ≥ 116
-24n - 28 ≥ 116
-24n ≥ 144
n ≤ 6

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