When n = 4, 3n = 3*4 = 12
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3n x 3n = 9n if 9n = 36 then n = 36/9 = 4
3n+6=18 n+2=6 n=4
In 3n-1 equals 11, n is 4.3n - 1 = 113n - 1 + 1 = 11 + 13n = 123n/3 = 12/3n = 4
(3n-2)/8 = (n+4)/55(3n - 2) = (n+4)815n - 10 = 8n + 327n = 42n = 6
3n = 0.138 n = 0.046