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Simplifying -7(n + -84) = -21 Reorder the terms: -7(-84 + n) = -21 (-84 * -7 + n * -7) = -21 (588 + -7n) = -21 Solving 588 + -7n = -21 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-588' to each side of the equation. 588 + -588 + -7n = -21 + -588 Combine like terms: 588 + -588 = 0 0 + -7n = -21 + -588 -7n = -21 + -588 Combine like terms: -21 + -588 = -609 -7n = -609 Divide each side by '-7'. n = 87 Simplifying n = 87
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