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Simplifying 5n + -21 = 3n + 5 Reorder the terms: -21 + 5n = 3n + 5 Reorder the terms: -21 + 5n = 5 + 3n Solving -21 + 5n = 5 + 3n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-3n' to each side of the equation. -21 + 5n + -3n = 5 + 3n + -3n Combine like terms: 5n + -3n = 2n -21 + 2n = 5 + 3n + -3n Combine like terms: 3n + -3n = 0 -21 + 2n = 5 + 0 -21 + 2n = 5 Add '21' to each side of the equation. -21 + 21 + 2n = 5 + 21 Combine like terms: -21 + 21 = 0 0 + 2n = 5 + 21 2n = 5 + 21 Combine like terms: 5 + 21 = 26 2n = 26 Divide each side by '2'. n = 13 Simplifying n = 13
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