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Simplifying -7(3n + -1) = 91 Reorder the terms: -7(-1 + 3n) = 91 (-1 * -7 + 3n * -7) = 91 (7 + -21n) = 91 Solving 7 + -21n = 91 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -21n = 91 + -7 Combine like terms: 7 + -7 = 0 0 + -21n = 91 + -7 -21n = 91 + -7 Combine like terms: 91 + -7 = 84 -21n = 84 Divide each side by '-21'. n = -4 Simplifying n = -4
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