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Simplifying 91 = -5(2 + -3n) + -4 91 = (2 * -5 + -3n * -5) + -4 91 = (-10 + 15n) + -4 Reorder the terms: 91 = -10 + -4 + 15n Combine like terms: -10 + -4 = -14 91 = -14 + 15n Solving 91 = -14 + 15n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-15n' to each side of the equation. 91 + -15n = -14 + 15n + -15n Combine like terms: 15n + -15n = 0 91 + -15n = -14 + 0 91 + -15n = -14 Add '-91' to each side of the equation. 91 + -91 + -15n = -14 + -91 Combine like terms: 91 + -91 = 0 0 + -15n = -14 + -91 -15n = -14 + -91 Combine like terms: -14 + -91 = -105 -15n = -105 Divide each side by '-15'. n = 7 Simplifying n = 7
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