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Simplifying 2n + -5n + -15 = -42 Reorder the terms: -15 + 2n + -5n = -42 Combine like terms: 2n + -5n = -3n -15 + -3n = -42 Solving -15 + -3n = -42 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '15' to each side of the equation. -15 + 15 + -3n = -42 + 15 Combine like terms: -15 + 15 = 0 0 + -3n = -42 + 15 -3n = -42 + 15 Combine like terms: -42 + 15 = -27 -3n = -27 Divide each side by '-3'. n = 9 Simplifying n = 9
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