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Anonymous
7565 divided by 7 = n
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n = 3/2, n = 2
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
7n
9n-2=7n+50 7n+9n=50+2 16n=52 n= 3.25