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Anonymous
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Dawson Beatty ∙
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Divide both sides by 3.
n = -6
Wiki User
3n+6=18 n+2=6 n=4
3n = 0.138 n = 0.046
When n = 4, 3n = 3*4 = 12
3n+18 is an algebraic expression and n is an unknown variable
3n x 3n = 9n if 9n = 36 then n = 36/9 = 4