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Simplifying 84 = -4(7 + -7n) 84 = (7 * -4 + -7n * -4) 84 = (-28 + 28n) Solving 84 = -28 + 28n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-28n' to each side of the equation. 84 + -28n = -28 + 28n + -28n Combine like terms: 28n + -28n = 0 84 + -28n = -28 + 0 84 + -28n = -28 Add '-84' to each side of the equation. 84 + -84 + -28n = -28 + -84 Combine like terms: 84 + -84 = 0 0 + -28n = -28 + -84 -28n = -28 + -84 Combine like terms: -28 + -84 = -112 -28n = -112 Divide each side by '-28'. n = 4 Simplifying n = 4
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