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Simplifying -87 = -3(3n + 5) Reorder the terms: -87 = -3(5 + 3n) -87 = (5 * -3 + 3n * -3) -87 = (-15 + -9n) Solving -87 = -15 + -9n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '9n' to each side of the equation. -87 + 9n = -15 + -9n + 9n Combine like terms: -9n + 9n = 0 -87 + 9n = -15 + 0 -87 + 9n = -15 Add '87' to each side of the equation. -87 + 87 + 9n = -15 + 87 Combine like terms: -87 + 87 = 0 0 + 9n = -15 + 87 9n = -15 + 87 Combine like terms: -15 + 87 = 72 9n = 72 Divide each side by '9'. n = 8 Simplifying n = 8
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