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Simplifying 2k + -4 = k + 9 Reorder the terms: -4 + 2k = k + 9 Reorder the terms: -4 + 2k = 9 + k Solving -4 + 2k = 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. -4 + 2k + -1k = 9 + k + -1k Combine like terms: 2k + -1k = 1k -4 + 1k = 9 + k + -1k Combine like terms: k + -1k = 0 -4 + 1k = 9 + 0 -4 + 1k = 9 Add '4' to each side of the equation. -4 + 4 + 1k = 9 + 4 Combine like terms: -4 + 4 = 0 0 + 1k = 9 + 4 1k = 9 + 4 Combine like terms: 9 + 4 = 13 1k = 13 Divide each side by '1'. k = 13 Simplifying k = 13
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