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Simplifying 15 + n = -1(1 + 7n) 15 + n = (1 * -1 + 7n * -1) 15 + n = (-1 + -7n) Solving 15 + n = -1 + -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. 15 + n + 7n = -1 + -7n + 7n Combine like terms: n + 7n = 8n 15 + 8n = -1 + -7n + 7n Combine like terms: -7n + 7n = 0 15 + 8n = -1 + 0 15 + 8n = -1 Add '-15' to each side of the equation. 15 + -15 + 8n = -1 + -15 Combine like terms: 15 + -15 = 0 0 + 8n = -1 + -15 8n = -1 + -15 Combine like terms: -1 + -15 = -16 8n = -16 Divide each side by '8'. n = -2 Simplifying n = -2
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