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Simplifying 91 = -7(1 + -2n) 91 = (1 * -7 + -2n * -7) 91 = (-7 + 14n) Solving 91 = -7 + 14n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-14n' to each side of the equation. 91 + -14n = -7 + 14n + -14n Combine like terms: 14n + -14n = 0 91 + -14n = -7 + 0 91 + -14n = -7 Add '-91' to each side of the equation. 91 + -91 + -14n = -7 + -91 Combine like terms: 91 + -91 = 0 0 + -14n = -7 + -91 -14n = -7 + -91 Combine like terms: -7 + -91 = -98 -14n = -98 Divide each side by '-14'. n = 7 Simplifying n = 7
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