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Simplifying -155 = -5(-1 + -4n) -155 = (-1 * -5 + -4n * -5) -155 = (5 + 20n) Solving -155 = 5 + 20n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-20n' to each side of the equation. -155 + -20n = 5 + 20n + -20n Combine like terms: 20n + -20n = 0 -155 + -20n = 5 + 0 -155 + -20n = 5 Add '155' to each side of the equation. -155 + 155 + -20n = 5 + 155 Combine like terms: -155 + 155 = 0 0 + -20n = 5 + 155 -20n = 5 + 155 Combine like terms: 5 + 155 = 160 -20n = 160 Divide each side by '-20'. n = -8 Simplifying n = -8
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