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Simplifying 147 = -3(7n + 7) Reorder the terms: 147 = -3(7 + 7n) 147 = (7 * -3 + 7n * -3) 147 = (-21 + -21n) Solving 147 = -21 + -21n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '21n' to each side of the equation. 147 + 21n = -21 + -21n + 21n Combine like terms: -21n + 21n = 0 147 + 21n = -21 + 0 147 + 21n = -21 Add '-147' to each side of the equation. 147 + -147 + 21n = -21 + -147 Combine like terms: 147 + -147 = 0 0 + 21n = -21 + -147 21n = -21 + -147 Combine like terms: -21 + -147 = -168 21n = -168 Divide each side by '21'. n = -8 Simplifying n = -8
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