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Simplifying (n + -2) * 4 = 20 Reorder the terms: (-2 + n) * 4 = 20 Reorder the terms for easier multiplication: 4(-2 + n) = 20 (-2 * 4 + n * 4) = 20 (-8 + 4n) = 20 Solving -8 + 4n = 20 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + 4n = 20 + 8 Combine like terms: -8 + 8 = 0 0 + 4n = 20 + 8 4n = 20 + 8 Combine like terms: 20 + 8 = 28 4n = 28 Divide each side by '4'. n = 7 Simplifying n = 7
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