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Simplifying 4k + -9 = 12 Reorder the terms: -9 + 4k = 12 Solving -9 + 4k = 12 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + 4k = 12 + 9 Combine like terms: -9 + 9 = 0 0 + 4k = 12 + 9 4k = 12 + 9 Combine like terms: 12 + 9 = 21 4k = 21 Divide each side by '4'. k = 5.25 Simplifying k = 5.25
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