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Simplifying 50k + 9 = 40k + 130 Reorder the terms: 9 + 50k = 40k + 130 Reorder the terms: 9 + 50k = 130 + 40k Solving 9 + 50k = 130 + 40k Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-40k' to each side of the equation. 9 + 50k + -40k = 130 + 40k + -40k Combine like terms: 50k + -40k = 10k 9 + 10k = 130 + 40k + -40k Combine like terms: 40k + -40k = 0 9 + 10k = 130 + 0 9 + 10k = 130 Add '-9' to each side of the equation. 9 + -9 + 10k = 130 + -9 Combine like terms: 9 + -9 = 0 0 + 10k = 130 + -9 10k = 130 + -9 Combine like terms: 130 + -9 = 121 10k = 121 Divide each side by '10'. k = 12.1 Simplifying k = 12.1
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