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Simplifying -30 + -4n = 3(4 + -6n) -30 + -4n = (4 * 3 + -6n * 3) -30 + -4n = (12 + -18n) Solving -30 + -4n = 12 + -18n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '18n' to each side of the equation. -30 + -4n + 18n = 12 + -18n + 18n Combine like terms: -4n + 18n = 14n -30 + 14n = 12 + -18n + 18n Combine like terms: -18n + 18n = 0 -30 + 14n = 12 + 0 -30 + 14n = 12 Add '30' to each side of the equation. -30 + 30 + 14n = 12 + 30 Combine like terms: -30 + 30 = 0 0 + 14n = 12 + 30 14n = 12 + 30 Combine like terms: 12 + 30 = 42 14n = 42 Divide each side by '14'. n = 3 Simplifying n = 3
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