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Anonymous
N would equal 7
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7n + 1 = 6n + 8 7n=6n+7 (minus 1 from each side) n=7 (7n-6n equals n, you are left with n=7)
63
9n-2=7n+50 7n+9n=50+2 16n=52 n= 3.25
10n + 3 = 7n + 53n = 2n = 2/3
6 , I hope I'm not doing your homework