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Simplifying -147 = -3(7 + 6n) -147 = (7 * -3 + 6n * -3) -147 = (-21 + -18n) Solving -147 = -21 + -18n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '18n' to each side of the equation. -147 + 18n = -21 + -18n + 18n Combine like terms: -18n + 18n = 0 -147 + 18n = -21 + 0 -147 + 18n = -21 Add '147' to each side of the equation. -147 + 147 + 18n = -21 + 147 Combine like terms: -147 + 147 = 0 0 + 18n = -21 + 147 18n = -21 + 147 Combine like terms: -21 + 147 = 126 18n = 126 Divide each side by '18'. n = 7 Simplifying n = 7
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