Arthur D. answered 11/20/13
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-11>6-2n-5
-11>1-2n
-12>-2n
6<n
n>6
or if you like...
-11>6-2n-5
-11>1-2n
-11+11>1+11-2n
0>12-2n
0+2n>12-2n+2n
2n>12
n>6