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Simplifying 102n + -40 = 21n Reorder the terms: -40 + 102n = 21n Solving -40 + 102n = 21n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-21n' to each side of the equation. -40 + 102n + -21n = 21n + -21n Combine like terms: 102n + -21n = 81n -40 + 81n = 21n + -21n Combine like terms: 21n + -21n = 0 -40 + 81n = 0 Add '40' to each side of the equation. -40 + 40 + 81n = 0 + 40 Combine like terms: -40 + 40 = 0 0 + 81n = 0 + 40 81n = 0 + 40 Combine like terms: 0 + 40 = 40 81n = 40 Divide each side by '81'. n = 0.4938271605 Simplifying n = 0.4938271605
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