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Simplifying -4 + 7k = 9k Solving -4 + 7k = 9k Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-9k' to each side of the equation. -4 + 7k + -9k = 9k + -9k Combine like terms: 7k + -9k = -2k -4 + -2k = 9k + -9k Combine like terms: 9k + -9k = 0 -4 + -2k = 0 Add '4' to each side of the equation. -4 + 4 + -2k = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -2k = 0 + 4 -2k = 0 + 4 Combine like terms: 0 + 4 = 4 -2k = 4 Divide each side by '-2'. k = -2 Simplifying k = -2
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