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Simplifying 8n + -1(15n + 13) = 7 Reorder the terms: 8n + -1(13 + 15n) = 7 8n + (13 * -1 + 15n * -1) = 7 8n + (-13 + -15n) = 7 Reorder the terms: -13 + 8n + -15n = 7 Combine like terms: 8n + -15n = -7n -13 + -7n = 7 Solving -13 + -7n = 7 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '13' to each side of the equation. -13 + 13 + -7n = 7 + 13 Combine like terms: -13 + 13 = 0 0 + -7n = 7 + 13 -7n = 7 + 13 Combine like terms: 7 + 13 = 20 -7n = 20 Divide each side by '-7'. n = -2.857142857 Simplifying n = -2.857142857
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