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Simplifying -21 = -3(2n + -8) Reorder the terms: -21 = -3(-8 + 2n) -21 = (-8 * -3 + 2n * -3) -21 = (24 + -6n) Solving -21 = 24 + -6n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '6n' to each side of the equation. -21 + 6n = 24 + -6n + 6n Combine like terms: -6n + 6n = 0 -21 + 6n = 24 + 0 -21 + 6n = 24 Add '21' to each side of the equation. -21 + 21 + 6n = 24 + 21 Combine like terms: -21 + 21 = 0 0 + 6n = 24 + 21 6n = 24 + 21 Combine like terms: 24 + 21 = 45 6n = 45 Divide each side by '6'. n = 7.5 Simplifying n = 7.5
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