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3n + 4n = -14 7n /7 = -14 /7 n = -2
3n+18 = 39 -4n 3n+4n = 39 -18 7n = 21 n = 3
4n = 3n + 44n - 3n = 3n - 3n + 4n = 4check:4n = 3n + 44(4) =? 3(4) + 416 =? 12 + 416 = 16 True
3 + 3n = 9 + 2n + 4n n = -2
It is 12n2 + 3n - 58