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Simplifying 7 + 9n(-2 + 9) + 1 = 0 Combine like terms: -2 + 9 = 7 7 + 9n(7) + 1 = 0 Reorder the terms for easier multiplication: 7 + 9 * 7n + 1 = 0 Multiply 9 * 7 7 + 63n + 1 = 0 Reorder the terms: 7 + 1 + 63n = 0 Combine like terms: 7 + 1 = 8 8 + 63n = 0 Solving 8 + 63n = 0 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + 63n = 0 + -8 Combine like terms: 8 + -8 = 0 0 + 63n = 0 + -8 63n = 0 + -8 Combine like terms: 0 + -8 = -8 63n = -8 Divide each side by '63'. n = -0.126984127 Simplifying n = -0.126984127
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