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Simplifying -8(-7 + n) = -40 (-7 * -8 + n * -8) = -40 (56 + -8n) = -40 Solving 56 + -8n = -40 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-56' to each side of the equation. 56 + -56 + -8n = -40 + -56 Combine like terms: 56 + -56 = 0 0 + -8n = -40 + -56 -8n = -40 + -56 Combine like terms: -40 + -56 = -96 -8n = -96 Divide each side by '-8'. n = 12 Simplifying n = 12
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