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Simplifying 20 = -9k + 2 Reorder the terms: 20 = 2 + -9k Solving 20 = 2 + -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. 20 + 9k = 2 + -9k + 9k Combine like terms: -9k + 9k = 0 20 + 9k = 2 + 0 20 + 9k = 2 Add '-20' to each side of the equation. 20 + -20 + 9k = 2 + -20 Combine like terms: 20 + -20 = 0 0 + 9k = 2 + -20 9k = 2 + -20 Combine like terms: 2 + -20 = -18 9k = -18 Divide each side by '9'. k = -2 Simplifying k = -2
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