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Simplifying 2n + -1 = 21 Reorder the terms: -1 + 2n = 21 Solving -1 + 2n = 21 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + 2n = 21 + 1 Combine like terms: -1 + 1 = 0 0 + 2n = 21 + 1 2n = 21 + 1 Combine like terms: 21 + 1 = 22 2n = 22 Divide each side by '2'. n = 11 Simplifying n = 11
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