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Simplifying -81 = 3k Solving -81 = 3k Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-3k' to each side of the equation. -81 + -3k = 3k + -3k Combine like terms: 3k + -3k = 0 -81 + -3k = 0 Add '81' to each side of the equation. -81 + 81 + -3k = 0 + 81 Combine like terms: -81 + 81 = 0 0 + -3k = 0 + 81 -3k = 0 + 81 Combine like terms: 0 + 81 = 81 -3k = 81 Divide each side by '-3'. k = -27 Simplifying k = -27
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