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Simplifying 13 = -9 + k Solving 13 = -9 + 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. 13 + -1k = -9 + k + -1k Combine like terms: k + -1k = 0 13 + -1k = -9 + 0 13 + -1k = -9 Add '-13' to each side of the equation. 13 + -13 + -1k = -9 + -13 Combine like terms: 13 + -13 = 0 0 + -1k = -9 + -13 -1k = -9 + -13 Combine like terms: -9 + -13 = -22 -1k = -22 Divide each side by '-1'. k = 22 Simplifying k = 22
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