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Simplifying 7n + -1(3n + -1) = -7 Reorder the terms: 7n + -1(-1 + 3n) = -7 7n + (-1 * -1 + 3n * -1) = -7 7n + (1 + -3n) = -7 Reorder the terms: 1 + 7n + -3n = -7 Combine like terms: 7n + -3n = 4n 1 + 4n = -7 Solving 1 + 4n = -7 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + 4n = -7 + -1 Combine like terms: 1 + -1 = 0 0 + 4n = -7 + -1 4n = -7 + -1 Combine like terms: -7 + -1 = -8 4n = -8 Divide each side by '4'. n = -2 Simplifying n = -2
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