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Simplifying 69 = 3(7n + -5) Reorder the terms: 69 = 3(-5 + 7n) 69 = (-5 * 3 + 7n * 3) 69 = (-15 + 21n) Solving 69 = -15 + 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. 69 + -21n = -15 + 21n + -21n Combine like terms: 21n + -21n = 0 69 + -21n = -15 + 0 69 + -21n = -15 Add '-69' to each side of the equation. 69 + -69 + -21n = -15 + -69 Combine like terms: 69 + -69 = 0 0 + -21n = -15 + -69 -21n = -15 + -69 Combine like terms: -15 + -69 = -84 -21n = -84 Divide each side by '-21'. n = 4 Simplifying n = 4
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