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Simplifying -6(3 + -7n) + 3 = -309 (3 * -6 + -7n * -6) + 3 = -309 (-18 + 42n) + 3 = -309 Reorder the terms: -18 + 3 + 42n = -309 Combine like terms: -18 + 3 = -15 -15 + 42n = -309 Solving -15 + 42n = -309 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '15' to each side of the equation. -15 + 15 + 42n = -309 + 15 Combine like terms: -15 + 15 = 0 0 + 42n = -309 + 15 42n = -309 + 15 Combine like terms: -309 + 15 = -294 42n = -294 Divide each side by '42'. n = -7 Simplifying n = -7
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