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Simplifying -9 + -2n = -3n Solving -9 + -2n = -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 + -2n + 3n = -3n + 3n Combine like terms: -2n + 3n = 1n -9 + 1n = -3n + 3n Combine like terms: -3n + 3n = 0 -9 + 1n = 0 Add '9' to each side of the equation. -9 + 9 + 1n = 0 + 9 Combine like terms: -9 + 9 = 0 0 + 1n = 0 + 9 1n = 0 + 9 Combine like terms: 0 + 9 = 9 1n = 9 Divide each side by '1'. n = 9 Simplifying n = 9
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