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Simplifying -81 = 7k Solving -81 = 7k Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-7k' to each side of the equation. -81 + -7k = 7k + -7k Combine like terms: 7k + -7k = 0 -81 + -7k = 0 Add '81' to each side of the equation. -81 + 81 + -7k = 0 + 81 Combine like terms: -81 + 81 = 0 0 + -7k = 0 + 81 -7k = 0 + 81 Combine like terms: 0 + 81 = 81 -7k = 81 Divide each side by '-7'. k = -11.57142857 Simplifying k = -11.57142857
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