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Simplifying 2n + -1 = 128 Reorder the terms: -1 + 2n = 128 Solving -1 + 2n = 128 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 = 128 + 1 Combine like terms: -1 + 1 = 0 0 + 2n = 128 + 1 2n = 128 + 1 Combine like terms: 128 + 1 = 129 2n = 129 Divide each side by '2'. n = 64.5 Simplifying n = 64.5
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