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Simplifying -3 + -3(7n + 1) = 39 + -3n Reorder the terms: -3 + -3(1 + 7n) = 39 + -3n -3 + (1 * -3 + 7n * -3) = 39 + -3n -3 + (-3 + -21n) = 39 + -3n Combine like terms: -3 + -3 = -6 -6 + -21n = 39 + -3n Solving -6 + -21n = 39 + -3n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '3n' to each side of the equation. -6 + -21n + 3n = 39 + -3n + 3n Combine like terms: -21n + 3n = -18n -6 + -18n = 39 + -3n + 3n Combine like terms: -3n + 3n = 0 -6 + -18n = 39 + 0 -6 + -18n = 39 Add '6' to each side of the equation. -6 + 6 + -18n = 39 + 6 Combine like terms: -6 + 6 = 0 0 + -18n = 39 + 6 -18n = 39 + 6 Combine like terms: 39 + 6 = 45 -18n = 45 Divide each side by '-18'. n = -2.5 Simplifying n = -2.5
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