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Simplifying 3 + 6(7n + 3) = -147 Reorder the terms: 3 + 6(3 + 7n) = -147 3 + (3 * 6 + 7n * 6) = -147 3 + (18 + 42n) = -147 Combine like terms: 3 + 18 = 21 21 + 42n = -147 Solving 21 + 42n = -147 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-21' to each side of the equation. 21 + -21 + 42n = -147 + -21 Combine like terms: 21 + -21 = 0 0 + 42n = -147 + -21 42n = -147 + -21 Combine like terms: -147 + -21 = -168 42n = -168 Divide each side by '42'. n = -4 Simplifying n = -4
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