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Simplifying n + -21 = -8n Reorder the terms: -21 + n = -8n Solving -21 + n = -8n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '8n' to each side of the equation. -21 + n + 8n = -8n + 8n Combine like terms: n + 8n = 9n -21 + 9n = -8n + 8n Combine like terms: -8n + 8n = 0 -21 + 9n = 0 Add '21' to each side of the equation. -21 + 21 + 9n = 0 + 21 Combine like terms: -21 + 21 = 0 0 + 9n = 0 + 21 9n = 0 + 21 Combine like terms: 0 + 21 = 21 9n = 21 Divide each side by '9'. n = 2.333333333 Simplifying n = 2.333333333
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