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Simplifying 11 + -9k = 15 + -7k Solving 11 + -9k = 15 + -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. 11 + -9k + 7k = 15 + -7k + 7k Combine like terms: -9k + 7k = -2k 11 + -2k = 15 + -7k + 7k Combine like terms: -7k + 7k = 0 11 + -2k = 15 + 0 11 + -2k = 15 Add '-11' to each side of the equation. 11 + -11 + -2k = 15 + -11 Combine like terms: 11 + -11 = 0 0 + -2k = 15 + -11 -2k = 15 + -11 Combine like terms: 15 + -11 = 4 -2k = 4 Divide each side by '-2'. k = -2 Simplifying k = -2
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