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Simplifying k + -7 = 2k Reorder the terms: -7 + k = 2k Solving -7 + k = 2k Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-2k' to each side of the equation. -7 + k + -2k = 2k + -2k Combine like terms: k + -2k = -1k -7 + -1k = 2k + -2k Combine like terms: 2k + -2k = 0 -7 + -1k = 0 Add '7' to each side of the equation. -7 + 7 + -1k = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -1k = 0 + 7 -1k = 0 + 7 Combine like terms: 0 + 7 = 7 -1k = 7 Divide each side by '-1'. k = -7 Simplifying k = -7
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