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Simplifying -8n + -7(n + -7) = 169 Reorder the terms: -8n + -7(-7 + n) = 169 -8n + (-7 * -7 + n * -7) = 169 -8n + (49 + -7n) = 169 Reorder the terms: 49 + -8n + -7n = 169 Combine like terms: -8n + -7n = -15n 49 + -15n = 169 Solving 49 + -15n = 169 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-49' to each side of the equation. 49 + -49 + -15n = 169 + -49 Combine like terms: 49 + -49 = 0 0 + -15n = 169 + -49 -15n = 169 + -49 Combine like terms: 169 + -49 = 120 -15n = 120 Divide each side by '-15'. n = -8 Simplifying n = -8
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