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Simplifying 2n + -72 = 90 Reorder the terms: -72 + 2n = 90 Solving -72 + 2n = 90 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '72' to each side of the equation. -72 + 72 + 2n = 90 + 72 Combine like terms: -72 + 72 = 0 0 + 2n = 90 + 72 2n = 90 + 72 Combine like terms: 90 + 72 = 162 2n = 162 Divide each side by '2'. n = 81 Simplifying n = 81
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