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Simplifying 7 + 4n = 7(1 + -2n) 7 + 4n = (1 * 7 + -2n * 7) 7 + 4n = (7 + -14n) Add '-7' to each side of the equation. 7 + -7 + 4n = 7 + -7 + -14n Combine like terms: 7 + -7 = 0 0 + 4n = 7 + -7 + -14n 4n = 7 + -7 + -14n Combine like terms: 7 + -7 = 0 4n = 0 + -14n 4n = -14n Solving 4n = -14n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '14n' to each side of the equation. 4n + 14n = -14n + 14n Combine like terms: 4n + 14n = 18n 18n = -14n + 14n Combine like terms: -14n + 14n = 0 18n = 0 Divide each side by '18'. n = 0 Simplifying n = 0
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