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Simplifying 91 = 7(3n + -5) Reorder the terms: 91 = 7(-5 + 3n) 91 = (-5 * 7 + 3n * 7) 91 = (-35 + 21n) Solving 91 = -35 + 21n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-21n' to each side of the equation. 91 + -21n = -35 + 21n + -21n Combine like terms: 21n + -21n = 0 91 + -21n = -35 + 0 91 + -21n = -35 Add '-91' to each side of the equation. 91 + -91 + -21n = -35 + -91 Combine like terms: 91 + -91 = 0 0 + -21n = -35 + -91 -21n = -35 + -91 Combine like terms: -35 + -91 = -126 -21n = -126 Divide each side by '-21'. n = 6 Simplifying n = 6
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