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Simplifying -7(n + -9) = -8n Reorder the terms: -7(-9 + n) = -8n (-9 * -7 + n * -7) = -8n (63 + -7n) = -8n Solving 63 + -7n = -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. 63 + -7n + 8n = -8n + 8n Combine like terms: -7n + 8n = 1n 63 + 1n = -8n + 8n Combine like terms: -8n + 8n = 0 63 + 1n = 0 Add '-63' to each side of the equation. 63 + -63 + 1n = 0 + -63 Combine like terms: 63 + -63 = 0 0 + 1n = 0 + -63 1n = 0 + -63 Combine like terms: 0 + -63 = -63 1n = -63 Divide each side by '1'. n = -63 Simplifying n = -63
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