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Simplifying -9 = k + -11 Reorder the terms: -9 = -11 + k Solving -9 = -11 + k Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-1k' to each side of the equation. -9 + -1k = -11 + k + -1k Combine like terms: k + -1k = 0 -9 + -1k = -11 + 0 -9 + -1k = -11 Add '9' to each side of the equation. -9 + 9 + -1k = -11 + 9 Combine like terms: -9 + 9 = 0 0 + -1k = -11 + 9 -1k = -11 + 9 Combine like terms: -11 + 9 = -2 -1k = -2 Divide each side by '-1'. k = 2 Simplifying k = 2

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