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Simplifying 9 = -3(-4 + n) 9 = (-4 * -3 + n * -3) 9 = (12 + -3n) Solving 9 = 12 + -3n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '3n' to each side of the equation. 9 + 3n = 12 + -3n + 3n Combine like terms: -3n + 3n = 0 9 + 3n = 12 + 0 9 + 3n = 12 Add '-9' to each side of the equation. 9 + -9 + 3n = 12 + -9 Combine like terms: 9 + -9 = 0 0 + 3n = 12 + -9 3n = 12 + -9 Combine like terms: 12 + -9 = 3 3n = 3 Divide each side by '3'. n = 1 Simplifying n = 1
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