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6n+3=15 6n+3-3=15-3=12 6n = 12 n=12/6 = 2
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6n + 17 = 5 subtract 17 from both sides 6n = -12 divide both sides by 6 n = -2 (negative 2)
6n - 2n + 2 = n - 11 4n - n = -11 - 2 3n = -13 n = -13/3 = -4.3333
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