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Simplifying -8n + 9 = -7n + -15 Reorder the terms: 9 + -8n = -7n + -15 Reorder the terms: 9 + -8n = -15 + -7n Solving 9 + -8n = -15 + -7n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '7n' to each side of the equation. 9 + -8n + 7n = -15 + -7n + 7n Combine like terms: -8n + 7n = -1n 9 + -1n = -15 + -7n + 7n Combine like terms: -7n + 7n = 0 9 + -1n = -15 + 0 9 + -1n = -15 Add '-9' to each side of the equation. 9 + -9 + -1n = -15 + -9 Combine like terms: 9 + -9 = 0 0 + -1n = -15 + -9 -1n = -15 + -9 Combine like terms: -15 + -9 = -24 -1n = -24 Divide each side by '-1'. n = 24 Simplifying n = 24
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