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Simplifying 7(2n + -2) + 4n = 130 Reorder the terms: 7(-2 + 2n) + 4n = 130 (-2 * 7 + 2n * 7) + 4n = 130 (-14 + 14n) + 4n = 130 Combine like terms: 14n + 4n = 18n -14 + 18n = 130 Solving -14 + 18n = 130 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '14' to each side of the equation. -14 + 14 + 18n = 130 + 14 Combine like terms: -14 + 14 = 0 0 + 18n = 130 + 14 18n = 130 + 14 Combine like terms: 130 + 14 = 144 18n = 144 Divide each side by '18'. n = 8 Simplifying n = 8
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