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Simplifying 30 = 2n + 20 Reorder the terms: 30 = 20 + 2n Solving 30 = 20 + 2n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-2n' to each side of the equation. 30 + -2n = 20 + 2n + -2n Combine like terms: 2n + -2n = 0 30 + -2n = 20 + 0 30 + -2n = 20 Add '-30' to each side of the equation. 30 + -30 + -2n = 20 + -30 Combine like terms: 30 + -30 = 0 0 + -2n = 20 + -30 -2n = 20 + -30 Combine like terms: 20 + -30 = -10 -2n = -10 Divide each side by '-2'. n = 5 Simplifying n = 5
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