Posted by jill on Monday, October 19, 2009 at 9:23pm.
2 choices:
n-6 = 1-n or -n + 6 = 1-n
1.
n-6 = 1-n
2n = 7
n = 7/2
2.
-n+6 = 1-n
6 =- 1, contradiction, so no solution
so n = 7/2
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