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Simplifying 3 = 20 + (n + -1) * 30 Reorder the terms: 3 = 20 + (-1 + n) * 30 Reorder the terms for easier multiplication: 3 = 20 + 30(-1 + n) 3 = 20 + (-1 * 30 + n * 30) 3 = 20 + (-30 + 30n) Combine like terms: 20 + -30 = -10 3 = -10 + 30n Solving 3 = -10 + 30n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-30n' to each side of the equation. 3 + -30n = -10 + 30n + -30n Combine like terms: 30n + -30n = 0 3 + -30n = -10 + 0 3 + -30n = -10 Add '-3' to each side of the equation. 3 + -3 + -30n = -10 + -3 Combine like terms: 3 + -3 = 0 0 + -30n = -10 + -3 -30n = -10 + -3 Combine like terms: -10 + -3 = -13 -30n = -13 Divide each side by '-30'. n = 0.4333333333 Simplifying n = 0.4333333333
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