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Simplifying 3n + -3 = 18 Reorder the terms: -3 + 3n = 18 Solving -3 + 3n = 18 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + 3n = 18 + 3 Combine like terms: -3 + 3 = 0 0 + 3n = 18 + 3 3n = 18 + 3 Combine like terms: 18 + 3 = 21 3n = 21 Divide each side by '3'. n = 7 Simplifying n = 7
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