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Simplifying 7(1 + -4n) = 91 (1 * 7 + -4n * 7) = 91 (7 + -28n) = 91 Solving 7 + -28n = 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 + -28n = 91 + -7 Combine like terms: 7 + -7 = 0 0 + -28n = 91 + -7 -28n = 91 + -7 Combine like terms: 91 + -7 = 84 -28n = 84 Divide each side by '-28'. n = -3 Simplifying n = -3
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