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Simplifying 3n + 30 = 21 + -28n Reorder the terms: 30 + 3n = 21 + -28n Solving 30 + 3n = 21 + -28n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '28n' to each side of the equation. 30 + 3n + 28n = 21 + -28n + 28n Combine like terms: 3n + 28n = 31n 30 + 31n = 21 + -28n + 28n Combine like terms: -28n + 28n = 0 30 + 31n = 21 + 0 30 + 31n = 21 Add '-30' to each side of the equation. 30 + -30 + 31n = 21 + -30 Combine like terms: 30 + -30 = 0 0 + 31n = 21 + -30 31n = 21 + -30 Combine like terms: 21 + -30 = -9 31n = -9 Divide each side by '31'. n = -0.2903225806 Simplifying n = -0.2903225806
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